538428864 has 56 divisors (see below), whose sum is σ = 1435534848. Its totient is φ = 178097920.

The previous prime is 538428833. The next prime is 538428889. The reversal of 538428864 is 468824835.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14449 + ... + 35855.

Almost surely, 2^538428864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 538428864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (717767424).

538428864 is an abundant number, since it is smaller than the sum of its proper divisors (897105984).

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

538428864 is a wasteful number, since it uses less digits than its factorization.

538428864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21553 (or 21543 counting only the distinct ones).

The product of its digits is 1474560, while the sum is 48.

The square root of 538428864 is about 23204.0699878276. The cubic root of 538428864 is about 813.5347549752.

The spelling of 538428864 in words is "five hundred thirty-eight million, four hundred twenty-eight thousand, eight hundred sixty-four".