38913320 has 16 divisors (see below), whose sum is σ = 87555060. Its totient is φ = 15565312.

The previous prime is 38913319. The next prime is 38913337. The reversal of 38913320 is 2331983.

It can be written as a sum of positive squares in 2 ways, for example, as 38912644 + 676 = 6238^2 + 26^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 486377 + ... + 486456.

Almost surely, 2^38913320 is an apocalyptic number.

It is an amenable number.

38913320 is an abundant number, since it is smaller than the sum of its proper divisors (48641740).

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

38913320 is a wasteful number, since it uses less digits than its factorization.

38913320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 972844 (or 972840 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 38913320 is about 6238.0541837980. The cubic root of 38913320 is about 338.8697184454.

The spelling of 38913320 in words is "thirty-eight million, nine hundred thirteen thousand, three hundred twenty".