45216828 has 18 divisors (see below), whose sum is σ = 114298184. Its totient is φ = 15072264.

The previous prime is 45216803. The next prime is 45216863. The reversal of 45216828 is 82861254.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1256023 = 45216828 / (4 + 5 + 2 + 1 + 6 + 8 + 2 + 8).

It is a junction number, because it is equal to n+sod(n) for n = 45216792 and 45216801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 627976 + ... + 628047.

Almost surely, 2^45216828 is an apocalyptic number.

It is an amenable number.

45216828 is an abundant number, since it is smaller than the sum of its proper divisors (69081356).

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

45216828 is a wasteful number, since it uses less digits than its factorization.

45216828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1256033 (or 1256028 counting only the distinct ones).

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

The square root of 45216828 is about 6724.3459161468. The cubic root of 45216828 is about 356.2596998282.

The spelling of 45216828 in words is "forty-five million, two hundred sixteen thousand, eight hundred twenty-eight".