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23638392460 = 2256607178889
BaseRepresentation
bin10110000000111101…
…010011111010001100
32021000101210202102001
4112000331103322030
5341402412024320
614505340442044
71464532010044
oct260075237214
967011722361
1023638392460
11a030290141
1246b8549324
1322c940a997
1412035ca724
159353b320a
hex580f53e8c

23638392460 has 24 divisors (see below), whose sum is σ = 49648415040. Its totient is φ = 9453873024.

The previous prime is 23638392419. The next prime is 23638392493. The reversal of 23638392460 is 6429383632.

It is a self number, because there is not a number n which added to its sum of digits gives 23638392460.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42696 + ... + 221584.

It is an arithmetic number, because the mean of its divisors is an integer number (2068683960).

Almost surely, 223638392460 is an apocalyptic number.

23638392460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23638392460 is an abundant number, since it is smaller than the sum of its proper divisors (26010022580).

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

23638392460 is a wasteful number, since it uses less digits than its factorization.

23638392460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185505 (or 185503 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 46.

The spelling of 23638392460 in words is "twenty-three billion, six hundred thirty-eight million, three hundred ninety-two thousand, four hundred sixty".

Divisors: 1 2 4 5 10 20 6607 13214 26428 33035 66070 132140 178889 357778 715556 894445 1788890 3577780 1181919623 2363839246 4727678492 5909598115 11819196230 23638392460