22328628 has 48 divisors (see below), whose sum is σ = 59856384. Its totient is φ = 6346080.

The previous prime is 22328627. The next prime is 22328659. The reversal of 22328628 is 82682322.

It is a super-3 number, since 3×22328628³ (a number of 23 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22328627) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18483 + ... + 19653.

It is an arithmetic number, because the mean of its divisors is an integer number (1247008).

Almost surely, 2^22328628 is an apocalyptic number.

22328628 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

22328628 is an abundant number, since it is smaller than the sum of its proper divisors (37527756).

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

22328628 is a wasteful number, since it uses less digits than its factorization.

22328628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1412 (or 1410 counting only the distinct ones).

The product of its digits is 18432, while the sum is 33.

The square root of 22328628 is about 4725.3177670925. The cubic root of 22328628 is about 281.5922379974.

The spelling of 22328628 in words is "twenty-two million, three hundred twenty-eight thousand, six hundred twenty-eight".