38977155 has 24 divisors (see below), whose sum is σ = 77212512. Its totient is φ = 17817984.

The previous prime is 38977139. The next prime is 38977223. The reversal of 38977155 is 55177983.

38977155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 38977155 - 2⁴ = 38977139 is a prime.

It is a super-2 number, since 2×38977155² = 3038437223788050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 38977155.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61554 + ... + 62183.

It is an arithmetic number, because the mean of its divisors is an integer number (3217188).

Almost surely, 2^38977155 is an apocalyptic number.

38977155 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

38977155 is a deficient number, since it is larger than the sum of its proper divisors (38235357).

38977155 is a wasteful number, since it uses less digits than its factorization.

38977155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123755 (or 123752 counting only the distinct ones).

The product of its digits is 264600, while the sum is 45.

The square root of 38977155 is about 6243.1686666308. The cubic root of 38977155 is about 339.0549157909.

The spelling of 38977155 in words is "thirty-eight million, nine hundred seventy-seven thousand, one hundred fifty-five".