28418522 has 16 divisors (see below), whose sum is σ = 46662912. Its totient is φ = 12873120.

The previous prime is 28418513. The next prime is 28418569. The reversal of 28418522 is 22581482.

It is a super-2 number, since 2×28418522² = 1615224785328968, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4823 + ... + 8949.

It is an arithmetic number, because the mean of its divisors is an integer number (2916432).

Almost surely, 2^28418522 is an apocalyptic number.

28418522 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28418522 is a deficient number, since it is larger than the sum of its proper divisors (18244390).

28418522 is a wasteful number, since it uses less digits than its factorization.

28418522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4453.

The product of its digits is 10240, while the sum is 32.

The square root of 28418522 is about 5330.9025502254. The cubic root of 28418522 is about 305.1643725657.

The spelling of 28418522 in words is "twenty-eight million, four hundred eighteen thousand, five hundred twenty-two".