538922628 has 36 divisors (see below), whose sum is σ = 1364554828. Its totient is φ = 179340480.

The previous prime is 538922623. The next prime is 538922641. The reversal of 538922628 is 826229835.

It is a happy number.

538922628 is a `hidden beast` number, since 5 + 389 + 2 + 262 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 589824 + 538332804 = 768^2 + 23202^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (538922623) 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, 9858 + ... + 34278.

Almost surely, 2^538922628 is an apocalyptic number.

It is an amenable number.

538922628 is an abundant number, since it is smaller than the sum of its proper divisors (825632200).

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

538922628 is a wasteful number, since it uses less digits than its factorization.

538922628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25044 (or 25039 counting only the distinct ones).

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

The square root of 538922628 is about 23214.7071487021. The cubic root of 538922628 is about 813.7833619089.

The spelling of 538922628 in words is "five hundred thirty-eight million, nine hundred twenty-two thousand, six hundred twenty-eight".