38943564 has 72 divisors (see below), whose sum is σ = 102763584. Its totient is φ = 11383200.

The previous prime is 38943547. The next prime is 38943581. The reversal of 38943564 is 46534983.

It is an interprime number because it is at equal distance from previous prime (38943547) and next prime (38943581).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 126699 + ... + 127005.

It is an arithmetic number, because the mean of its divisors is an integer number (1427272).

Almost surely, 2^38943564 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38943564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51381792).

38943564 is an abundant number, since it is smaller than the sum of its proper divisors (63820020).

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

38943564 is a wasteful number, since it uses less digits than its factorization.

38943564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387 (or 354 counting only the distinct ones).

The product of its digits is 311040, while the sum is 42.

The square root of 38943564 is about 6240.4778663176. The cubic root of 38943564 is about 338.9574872072.

The spelling of 38943564 in words is "thirty-eight million, nine hundred forty-three thousand, five hundred sixty-four".