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248953660 = 225431372113
BaseRepresentation
bin11101101011010…
…11101100111100
3122100110011012221
432311223230330
51002213004120
640411535124
76112033264
oct1665535474
9570404187
10248953660
1111858962a
126b45a4a4
133c767377
14250c67a4
1516cc90aa
hexed6bb3c

248953660 has 48 divisors (see below), whose sum is σ = 539120736. Its totient is φ = 96509952.

The previous prime is 248953651. The next prime is 248953669. The reversal of 248953660 is 66359842.

It is an interprime number because it is at equal distance from previous prime (248953651) and next prime (248953669).

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (248953669) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116764 + ... + 118876.

It is an arithmetic number, because the mean of its divisors is an integer number (11231682).

Almost surely, 2248953660 is an apocalyptic number.

248953660 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 248953660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (269560368).

248953660 is an abundant number, since it is smaller than the sum of its proper divisors (290167076).

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

248953660 is a wasteful number, since it uses less digits than its factorization.

248953660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2302 (or 2300 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 43.

The square root of 248953660 is about 15778.2654306486. The cubic root of 248953660 is about 629.0804254310.

The spelling of 248953660 in words is "two hundred forty-eight million, nine hundred fifty-three thousand, six hundred sixty".

Divisors: 1 2 4 5 10 20 43 86 137 172 215 274 430 548 685 860 1370 2113 2740 4226 5891 8452 10565 11782 21130 23564 29455 42260 58910 90859 117820 181718 289481 363436 454295 578962 908590 1157924 1447405 1817180 2894810 5789620 12447683 24895366 49790732 62238415 124476830 248953660