22687028 has 24 divisors (see below), whose sum is σ = 48865152. Its totient is φ = 8974944.

The previous prime is 22687003. The next prime is 22687033. The reversal of 22687028 is 82078622.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

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, 30800 + ... + 31527.

It is an arithmetic number, because the mean of its divisors is an integer number (2036048).

Almost surely, 2^22687028 is an apocalyptic number.

22687028 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

22687028 is an abundant number, since it is smaller than the sum of its proper divisors (26178124).

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

22687028 is a wasteful number, since it uses less digits than its factorization.

22687028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62351 (or 62349 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 22687028 is about 4763.0901734063. The cubic root of 22687028 is about 283.0908738535.

The spelling of 22687028 in words is "twenty-two million, six hundred eighty-seven thousand, twenty-eight".