53280828 has 30 divisors (see below), whose sum is σ = 139287456. Its totient is φ = 17760168.

The previous prime is 53280823. The next prime is 53280841. The reversal of 53280828 is 82808235.

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 = 53280792 and 53280801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53280823) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 81900 + ... + 82547.

Almost surely, 2^53280828 is an apocalyptic number.

It is an amenable number.

53280828 is an abundant number, since it is smaller than the sum of its proper divisors (86006628).

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

53280828 is a wasteful number, since it uses less digits than its factorization.

53280828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164463 (or 164452 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 53280828 is about 7299.3717537881. The cubic root of 53280828 is about 376.2908474690.

The spelling of 53280828 in words is "fifty-three million, two hundred eighty thousand, eight hundred twenty-eight".