38121504 has 24 divisors (see below), whose sum is σ = 100069200. Its totient is φ = 12707136.

The previous prime is 38121481. The next prime is 38121509. The reversal of 38121504 is 40512183.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (38121509) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 198454 + ... + 198645.

It is an arithmetic number, because the mean of its divisors is an integer number (4169550).

Almost surely, 2^38121504 is an apocalyptic number.

It is an amenable number.

38121504 is an abundant number, since it is smaller than the sum of its proper divisors (61947696).

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

38121504 is a wasteful number, since it uses less digits than its factorization.

38121504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397112 (or 397104 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 38121504 is about 6174.2614133190. The cubic root of 38121504 is about 336.5554870389. Note that the first 3 decimals are identical.

Adding to 38121504 its reverse (40512183), we get a palindrome (78633687).

The spelling of 38121504 in words is "thirty-eight million, one hundred twenty-one thousand, five hundred four".