22456740 has 48 divisors (see below), whose sum is σ = 65616768. Its totient is φ = 5727744.

The previous prime is 22456697. The next prime is 22456751. The reversal of 22456740 is 4765422.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 22456698 and 22456707.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6757 + ... + 9516.

It is an arithmetic number, because the mean of its divisors is an integer number (1367016).

Almost surely, 2^22456740 is an apocalyptic number.

22456740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22456740 is an abundant number, since it is smaller than the sum of its proper divisors (43160028).

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

22456740 is a wasteful number, since it uses less digits than its factorization.

22456740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16308 (or 16306 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 30.

The square root of 22456740 is about 4738.8542919149. The cubic root of 22456740 is about 282.1297627239.

The spelling of 22456740 in words is "twenty-two million, four hundred fifty-six thousand, seven hundred forty".