538121872 has 20 divisors (see below), whose sum is σ = 1048075776. Its totient is φ = 267650720.

The previous prime is 538121867. The next prime is 538121873. The reversal of 538121872 is 278121835.

It is not an unprimeable number, because it can be changed into a prime (538121873) 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, 84988 + ... + 91099.

Almost surely, 2^538121872 is an apocalyptic number.

It is an amenable number.

538121872 is a deficient number, since it is larger than the sum of its proper divisors (509953904).

538121872 is a wasteful number, since it uses less digits than its factorization.

538121872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176286 (or 176280 counting only the distinct ones).

The product of its digits is 26880, while the sum is 37.

The square root of 538121872 is about 23197.4539982301. The cubic root of 538121872 is about 813.3801098840.

Subtracting from 538121872 its sum of digits (37), we obtain a palindrome (538121835).

The spelling of 538121872 in words is "five hundred thirty-eight million, one hundred twenty-one thousand, eight hundred seventy-two".