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8972515938 = 233164697457
BaseRepresentation
bin10000101101100110…
…11011101001100010
3212011022101000222010
420112303123221202
5121333431002223
64042200053350
7435230061411
oct102663335142
925138330863
108972515938
11389482a031
1218a4a64256
13accb79539
146118dd478
15377a9d393
hex216cdba62

8972515938 has 32 divisors (see below), whose sum is σ = 18529251840. Its totient is φ = 2893524480.

The previous prime is 8972515933. The next prime is 8972515957. The reversal of 8972515938 is 8395152798.

8972515938 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (8972515933) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1199506 + ... + 1206962.

It is an arithmetic number, because the mean of its divisors is an integer number (579039120).

Almost surely, 28972515938 is an apocalyptic number.

8972515938 is an abundant number, since it is smaller than the sum of its proper divisors (9556735902).

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

8972515938 is a wasteful number, since it uses less digits than its factorization.

8972515938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13962.

The product of its digits is 5443200, while the sum is 57.

The square root of 8972515938 is about 94723.3653223955. The cubic root of 8972515938 is about 2077.9642880229.

The spelling of 8972515938 in words is "eight billion, nine hundred seventy-two million, five hundred fifteen thousand, nine hundred thirty-eight".

Divisors: 1 2 3 6 31 62 93 186 6469 7457 12938 14914 19407 22371 38814 44742 200539 231167 401078 462334 601617 693501 1203234 1387002 48239333 96478666 144717999 289435998 1495419323 2990838646 4486257969 8972515938