538558428 has 12 divisors (see below), whose sum is σ = 1256636360. Its totient is φ = 179519472.

The previous prime is 538558399. The next prime is 538558429. The reversal of 538558428 is 824855835.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538558429) 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, 22439923 + ... + 22439946.

Almost surely, 2^538558428 is an apocalyptic number.

It is an amenable number.

538558428 is an abundant number, since it is smaller than the sum of its proper divisors (718077932).

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

538558428 is a wasteful number, since it uses less digits than its factorization.

538558428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44879876 (or 44879874 counting only the distinct ones).

The product of its digits is 1536000, while the sum is 48.

The square root of 538558428 is about 23206.8616577080. The cubic root of 538558428 is about 813.6000043025.

The spelling of 538558428 in words is "five hundred thirty-eight million, five hundred fifty-eight thousand, four hundred twenty-eight".