38688155 has 16 divisors (see below), whose sum is σ = 52282368. Its totient is φ = 27228000.

The previous prime is 38688131. The next prime is 38688157. The reversal of 38688155 is 55188683.

It is not a de Polignac number, because 38688155 - 2²⁰ = 37639579 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38688157) 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, 9641 + ... + 13050.

It is an arithmetic number, because the mean of its divisors is an integer number (3267648).

Almost surely, 2^38688155 is an apocalyptic number.

38688155 is a deficient number, since it is larger than the sum of its proper divisors (13594213).

38688155 is a wasteful number, since it uses less digits than its factorization.

38688155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22738.

The product of its digits is 230400, while the sum is 44.

The square root of 38688155 is about 6219.9803054351. The cubic root of 38688155 is about 338.2148506210.

The spelling of 38688155 in words is "thirty-eight million, six hundred eighty-eight thousand, one hundred fifty-five".