38987932520 has 16 divisors (see below), whose sum is σ = 87722848260. Its totient is φ = 15595172992.

The previous prime is 38987932519. The next prime is 38987932597. The reversal of 38987932520 is 2523978983.

It can be written as a sum of positive squares in 2 ways, for example, as 36122043364 + 2865889156 = 190058^2 + 53534^2 .

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 3 ways as a sum of consecutive naturals, for example, 487349117 + ... + 487349196.

Almost surely, 2^38987932520 is an apocalyptic number.

It is an amenable number.

38987932520 is an abundant number, since it is smaller than the sum of its proper divisors (48734915740).

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

38987932520 is a wasteful number, since it uses less digits than its factorization.

38987932520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 974698324 (or 974698320 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 56.

The spelling of 38987932520 in words is "thirty-eight billion, nine hundred eighty-seven million, nine hundred thirty-two thousand, five hundred twenty".