22782020 has 24 divisors (see below), whose sum is σ = 48451200. Its totient is φ = 8996832.

The previous prime is 22782017. The next prime is 22782037. The reversal of 22782020 is 2028722.

It is a happy 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, 5630 + ... + 8789.

It is an arithmetic number, because the mean of its divisors is an integer number (2018800).

Almost surely, 2^22782020 is an apocalyptic number.

22782020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22782020 is an abundant number, since it is smaller than the sum of its proper divisors (25669180).

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

22782020 is a wasteful number, since it uses less digits than its factorization.

22782020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14507 (or 14505 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 22782020 is about 4773.0514348789. The cubic root of 22782020 is about 283.4854300643.

The spelling of 22782020 in words is "twenty-two million, seven hundred eighty-two thousand, twenty".