52218828 has 36 divisors (see below), whose sum is σ = 132852720. Its totient is φ = 17293536.

The previous prime is 52218823. The next prime is 52218841. The reversal of 52218828 is 82881225.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

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 = 52218792 and 52218801.

It is not an unprimeable number, because it can be changed into a prime (52218823) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1033 + ... + 10271.

Almost surely, 2^52218828 is an apocalyptic number.

It is an amenable number.

52218828 is an abundant number, since it is smaller than the sum of its proper divisors (80633892).

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

52218828 is a wasteful number, since it uses less digits than its factorization.

52218828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9406 (or 9401 counting only the distinct ones).

The product of its digits is 20480, while the sum is 36.

The square root of 52218828 is about 7226.2596133823. The cubic root of 52218828 is about 373.7739585615.

The spelling of 52218828 in words is "fifty-two million, two hundred eighteen thousand, eight hundred twenty-eight".