53018928 has 160 divisors (see below), whose sum is σ = 162846720. Its totient is φ = 16485120.

The previous prime is 53018923. The next prime is 53018929. The reversal of 53018928 is 82981035.

It is a super-2 number, since 2×53018928² = 5622013452538368, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 53018892 and 53018901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53018923) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 495451 + ... + 495557.

It is an arithmetic number, because the mean of its divisors is an integer number (1017792).

Almost surely, 2^53018928 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 53018928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81423360).

53018928 is an abundant number, since it is smaller than the sum of its proper divisors (109827792).

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

53018928 is a wasteful number, since it uses less digits than its factorization.

53018928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192 (or 180 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 53018928 is about 7281.4097536123. The cubic root of 53018928 is about 375.6732864375.

The spelling of 53018928 in words is "fifty-three million, eighteen thousand, nine hundred twenty-eight".