22015028 has 12 divisors (see below), whose sum is σ = 44030112. Its totient is φ = 9435000.

The previous prime is 22015027. The next prime is 22015067. The reversal of 22015028 is 82051022.

22015028 is an admirable number.

It is a super-2 number, since 2×22015028² = 969322915681568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22015027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 393098 + ... + 393153.

It is an arithmetic number, because the mean of its divisors is an integer number (3669176).

Almost surely, 2^22015028 is an apocalyptic number.

22015028 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

22015028 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

22015028 is a wasteful number, since it uses less digits than its factorization.

22015028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 786262 (or 786260 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 22015028 is about 4692.0174765233. The cubic root of 22015028 is about 280.2677201301.

The spelling of 22015028 in words is "twenty-two million, fifteen thousand, twenty-eight".