22681420 has 12 divisors (see below), whose sum is σ = 47631024. Its totient is φ = 9072560.

The previous prime is 22681397. The next prime is 22681433. The reversal of 22681420 is 2418622.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 567016 + ... + 567055.

It is an arithmetic number, because the mean of its divisors is an integer number (3969252).

Almost surely, 2^22681420 is an apocalyptic number.

22681420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22681420 is an abundant number, since it is smaller than the sum of its proper divisors (24949604).

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

22681420 is a wasteful number, since it uses less digits than its factorization.

22681420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1134080 (or 1134078 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 22681420 is about 4762.5014435693. The cubic root of 22681420 is about 283.0675462137.

The spelling of 22681420 in words is "twenty-two million, six hundred eighty-one thousand, four hundred twenty".