38857563 has 20 divisors (see below), whose sum is σ = 61463160. Its totient is φ = 24380352.

The previous prime is 38857541. The next prime is 38857571. The reversal of 38857563 is 36575883.

38857563 is a `hidden beast` number, since 3 + 8 + 85 + 7 + 563 = 666.

It is not a de Polignac number, because 38857563 - 2⁵ = 38857531 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38857573) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 12733 + ... + 15486.

It is an arithmetic number, because the mean of its divisors is an integer number (3073158).

Almost surely, 2^38857563 is an apocalyptic number.

38857563 is a deficient number, since it is larger than the sum of its proper divisors (22605597).

38857563 is a wasteful number, since it uses less digits than its factorization.

38857563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28248 (or 28239 counting only the distinct ones).

The product of its digits is 604800, while the sum is 45.

The square root of 38857563 is about 6233.5834798292. The cubic root of 38857563 is about 338.7077911126.

The spelling of 38857563 in words is "thirty-eight million, eight hundred fifty-seven thousand, five hundred sixty-three".