22652028 has 144 divisors (see below), whose sum is σ = 71688960. Its totient is φ = 6057504.

The previous prime is 22652017. The next prime is 22652039. The reversal of 22652028 is 82025622.

22652028 is a `hidden beast` number, since 2 + 2 + 652 + 0 + 2 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (22652017) and next prime (22652039).

It is a super-2 number, since 2×22652028² = 1026228745025568, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 22651992 and 22652010.

It is a congruent number.

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 47 ways as a sum of consecutive naturals, for example, 272875 + ... + 272957.

It is an arithmetic number, because the mean of its divisors is an integer number (497840).

Almost surely, 2^22652028 is an apocalyptic number.

22652028 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22652028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35844480).

22652028 is an abundant number, since it is smaller than the sum of its proper divisors (49036932).

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

22652028 is a wasteful number, since it uses less digits than its factorization.

22652028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141 (or 114 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 22652028 is about 4759.4146698938. The cubic root of 22652028 is about 282.9452211604.

The spelling of 22652028 in words is "twenty-two million, six hundred fifty-two thousand, twenty-eight".