22856740 has 12 divisors (see below), whose sum is σ = 47999196. Its totient is φ = 9142688.

The previous prime is 22856737. The next prime is 22856741. The reversal of 22856740 is 4765822.

It can be written as a sum of positive squares in 2 ways, for example, as 14318656 + 8538084 = 3784^2 + 2922^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22856696 and 22856705.

It is not an unprimeable number, because it can be changed into a prime (22856741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 571399 + ... + 571438.

It is an arithmetic number, because the mean of its divisors is an integer number (3999933).

Almost surely, 2^22856740 is an apocalyptic number.

22856740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22856740 is an abundant number, since it is smaller than the sum of its proper divisors (25142456).

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

22856740 is a wasteful number, since it uses less digits than its factorization.

22856740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1142846 (or 1142844 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 22856740 is about 4780.8723053435. The cubic root of 22856740 is about 283.7950150788.

It can be divided in two parts, 2285 and 6740, that added together give a square (9025 = 95²).

The spelling of 22856740 in words is "twenty-two million, eight hundred fifty-six thousand, seven hundred forty".