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245911380 = 2235111328661
BaseRepresentation
bin11101010100001…
…00111101010100
3122010201120222220
432222010331110
51000423131010
640222422340
76044132541
oct1652047524
9563646886
10245911380
111168a0950
126a4319b0
133bc406c0
1424933bc8
15168c7970
hexea84f54

245911380 has 96 divisors (see below), whose sum is σ = 808956288. Its totient is φ = 55027200.

The previous prime is 245911349. The next prime is 245911403. The reversal of 245911380 is 83119542.

245911380 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5751 + ... + 22910.

It is an arithmetic number, because the mean of its divisors is an integer number (8426628).

Almost surely, 2245911380 is an apocalyptic number.

245911380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245911380 is an abundant number, since it is smaller than the sum of its proper divisors (563044908).

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

245911380 is a wasteful number, since it uses less digits than its factorization.

245911380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28697 (or 28695 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 245911380 is about 15681.5617844652. The cubic root of 245911380 is about 626.5074057086.

The spelling of 245911380 in words is "two hundred forty-five million, nine hundred eleven thousand, three hundred eighty".

Divisors: 1 2 3 4 5 6 10 11 12 13 15 20 22 26 30 33 39 44 52 55 60 65 66 78 110 130 132 143 156 165 195 220 260 286 330 390 429 572 660 715 780 858 1430 1716 2145 2860 4290 8580 28661 57322 85983 114644 143305 171966 286610 315271 343932 372593 429915 573220 630542 745186 859830 945813 1117779 1261084 1490372 1576355 1719660 1862965 1891626 2235558 3152710 3725930 3783252 4098523 4471116 4729065 5588895 6305420 7451860 8197046 9458130 11177790 12295569 16394092 18916260 20492615 22355580 24591138 40985230 49182276 61477845 81970460 122955690 245911380