22355788 has 24 divisors (see below), whose sum is σ = 48151712. Its totient is φ = 8843904.

The previous prime is 22355779. The next prime is 22355803. The reversal of 22355788 is 88755322.

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 22355788.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is an upside-down number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30345 + ... + 31072.

Almost surely, 2^22355788 is an apocalyptic number.

22355788 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

22355788 is an abundant number, since it is smaller than the sum of its proper divisors (25795924).

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

22355788 is a wasteful number, since it uses less digits than its factorization.

22355788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61441 (or 61439 counting only the distinct ones).

The product of its digits is 134400, while the sum is 40.

The square root of 22355788 is about 4728.1907744929. The cubic root of 22355788 is about 281.7063657188.

The spelling of 22355788 in words is "twenty-two million, three hundred fifty-five thousand, seven hundred eighty-eight".