53124728 has 32 divisors (see below), whose sum is σ = 106932960. Its totient is φ = 24652800.

The previous prime is 53124719. The next prime is 53124739. The reversal of 53124728 is 82742135.

It is a junction number, because it is equal to n+sod(n) for n = 53124694 and 53124703.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7253 + ... + 12603.

It is an arithmetic number, because the mean of its divisors is an integer number (3341655).

Almost surely, 2^53124728 is an apocalyptic number.

It is an amenable number.

53124728 is an abundant number, since it is smaller than the sum of its proper divisors (53808232).

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

53124728 is a wasteful number, since it uses less digits than its factorization.

53124728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5447 (or 5443 counting only the distinct ones).

The product of its digits is 13440, while the sum is 32.

The square root of 53124728 is about 7288.6712094867. The cubic root of 53124728 is about 375.9230074738.

The spelling of 53124728 in words is "fifty-three million, one hundred twenty-four thousand, seven hundred twenty-eight".