538406928 has 30 divisors (see below), whose sum is σ = 1506792014. Its totient is φ = 179468928.

The previous prime is 538406927. The next prime is 538406929. The reversal of 538406928 is 829604835.

It is an interprime number because it is at equal distance from previous prime (538406927) and next prime (538406929).

It can be written as a sum of positive squares in only one way, i.e., 361304064 + 177102864 = 19008^2 + 13308^2 .

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (538406927) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1869325 + ... + 1869612.

Almost surely, 2^538406928 is an apocalyptic number.

It is an amenable number.

538406928 is an abundant number, since it is smaller than the sum of its proper divisors (968385086).

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

538406928 is a wasteful number, since it uses less digits than its factorization.

538406928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3738951 (or 3738942 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The square root of 538406928 is about 23203.5973073142. The cubic root of 538406928 is about 813.5237068177.

The spelling of 538406928 in words is "five hundred thirty-eight million, four hundred six thousand, nine hundred twenty-eight".