38521923 has 12 divisors (see below), whose sum is σ = 56456904. Its totient is φ = 23346400.

The previous prime is 38521913. The next prime is 38521943. The reversal of 38521923 is 32912583.

It is not a de Polignac number, because 38521923 - 2⁴ = 38521907 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (38521913) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52698 + ... + 53423.

It is an arithmetic number, because the mean of its divisors is an integer number (4704742).

Almost surely, 2^38521923 is an apocalyptic number.

38521923 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

38521923 is a deficient number, since it is larger than the sum of its proper divisors (17934981).

38521923 is a wasteful number, since it uses less digits than its factorization.

38521923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106146 (or 106135 counting only the distinct ones).

The product of its digits is 12960, while the sum is 33.

The square root of 38521923 is about 6206.6031772621. The cubic root of 38521923 is about 337.7297508334.

It can be divided in two parts, 3852 and 1923, that added together give a palindrome (5775).

The spelling of 38521923 in words is "thirty-eight million, five hundred twenty-one thousand, nine hundred twenty-three".