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248443920 = 243253111131
BaseRepresentation
bin11101100111011…
…11010000010000
3122022111020222200
432303233100100
51002100201140
640353003200
76104511204
oct1663572020
9568436880
10248443920
1111827065a
126b253500
133c61934a
1424dd2b04
1516c28030
hexecef410

248443920 has 120 divisors (see below), whose sum is σ = 861349632. Its totient is φ = 64108800.

The previous prime is 248443903. The next prime is 248443963. The reversal of 248443920 is 29344842.

248443920 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16755 + ... + 27885.

Almost surely, 2248443920 is an apocalyptic number.

248443920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 248443920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (430674816).

248443920 is an abundant number, since it is smaller than the sum of its proper divisors (612905712).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

248443920 is a wasteful number, since it uses less digits than its factorization.

248443920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11181 (or 11172 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The square root of 248443920 is about 15762.1039204797. The cubic root of 248443920 is about 628.6507784517.

The spelling of 248443920 in words is "two hundred forty-eight million, four hundred forty-three thousand, nine hundred twenty".

Divisors: 1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 30 31 36 40 45 48 60 62 72 80 90 93 120 124 144 155 180 186 240 248 279 310 360 372 465 496 558 620 720 744 930 1116 1240 1395 1488 1860 2232 2480 2790 3720 4464 5580 7440 11131 11160 22262 22320 33393 44524 55655 66786 89048 100179 111310 133572 166965 178096 200358 222620 267144 333930 345061 400716 445240 500895 534288 667860 690122 801432 890480 1001790 1035183 1335720 1380244 1602864 1725305 2003580 2070366 2671440 2760488 3105549 3450610 4007160 4140732 5175915 5520976 6211098 6901220 8014320 8281464 10351830 12422196 13802440 15527745 16562928 20703660 24844392 27604880 31055490 41407320 49688784 62110980 82814640 124221960 248443920