28118022 has 16 divisors (see below), whose sum is σ = 56313840. Its totient is φ = 9359712.

The previous prime is 28118003. The next prime is 28118033. The reversal of 28118022 is 22081182.

It is a super-2 number, since 2×28118022² = 1581246322384968, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28117983 and 28118001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2148 + ... + 7800.

It is an arithmetic number, because the mean of its divisors is an integer number (3519615).

Almost surely, 2^28118022 is an apocalyptic number.

28118022 is an abundant number, since it is smaller than the sum of its proper divisors (28195818).

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

28118022 is a wasteful number, since it uses less digits than its factorization.

28118022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6487.

The product of its (nonzero) digits is 512, while the sum is 24.

The square root of 28118022 is about 5302.6429259380. The cubic root of 28118022 is about 304.0849471173.

The spelling of 28118022 in words is "twenty-eight million, one hundred eighteen thousand, twenty-two".