22774720 has 28 divisors (see below), whose sum is σ = 54233064. Its totient is φ = 9109760.

The previous prime is 22774709. The next prime is 22774751. The reversal of 22774720 is 2747722.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35266 + ... + 35905.

Almost surely, 2^22774720 is an apocalyptic number.

22774720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22774720 is an abundant number, since it is smaller than the sum of its proper divisors (31458344).

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

22774720 is an equidigital number, since it uses as much as digits as its factorization.

22774720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71188 (or 71178 counting only the distinct ones).

The product of its (nonzero) digits is 10976, while the sum is 31.

The square root of 22774720 is about 4772.2866636446. The cubic root of 22774720 is about 283.4551479278.

It can be divided in two parts, 227 and 74720, that added together give a palindrome (74947).

The spelling of 22774720 in words is "twenty-two million, seven hundred seventy-four thousand, seven hundred twenty".