22855840 has 48 divisors (see below), whose sum is σ = 61713792. Its totient is φ = 7835904.

The previous prime is 22855831. The next prime is 22855853. The reversal of 22855840 is 4855822.

It is a junction number, because it is equal to n+sod(n) for n = 22855796 and 22855805.

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, 9084 + ... + 11323.

It is an arithmetic number, because the mean of its divisors is an integer number (1285704).

Almost surely, 2^22855840 is an apocalyptic number.

22855840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22855840 is an abundant number, since it is smaller than the sum of its proper divisors (38857952).

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

22855840 is a wasteful number, since it uses less digits than its factorization.

22855840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20429 (or 20421 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 34.

The square root of 22855840 is about 4780.7781793344. The cubic root of 22855840 is about 283.7912901547.

The spelling of 22855840 in words is "twenty-two million, eight hundred fifty-five thousand, eight hundred forty".