38988521 has 16 divisors (see below), whose sum is σ = 46787328. Its totient is φ = 32016000.

The previous prime is 38988517. The next prime is 38988529. The reversal of 38988521 is 12588983.

It is a cyclic number.

It is not a de Polignac number, because 38988521 - 2² = 38988517 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38988529) 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, 3821 + ... + 9621.

It is an arithmetic number, because the mean of its divisors is an integer number (2924208).

Almost surely, 2^38988521 is an apocalyptic number.

It is an amenable number.

38988521 is a deficient number, since it is larger than the sum of its proper divisors (7798807).

38988521 is a wasteful number, since it uses less digits than its factorization.

38988521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5872.

The product of its digits is 138240, while the sum is 44.

The square root of 38988521 is about 6244.0788752225. The cubic root of 38988521 is about 339.0878694843.

The spelling of 38988521 in words is "thirty-eight million, nine hundred eighty-eight thousand, five hundred twenty-one".