22724712 has 40 divisors (see below), whose sum is σ = 63652050. Its totient is φ = 7574688.

The previous prime is 22724707. The next prime is 22724717. The reversal of 22724712 is 21742722.

It is an interprime number because it is at equal distance from previous prime (22724707) and next prime (22724717).

It can be written as a sum of positive squares in only one way, i.e., 12574116 + 10150596 = 3546^2 + 3186^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (22724717) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 16887 + ... + 18182.

Almost surely, 2^22724712 is an apocalyptic number.

It is an amenable number.

22724712 is an abundant number, since it is smaller than the sum of its proper divisors (40927338).

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

22724712 is a wasteful number, since it uses less digits than its factorization.

22724712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35087 (or 35074 counting only the distinct ones).

The product of its digits is 3136, while the sum is 27.

The square root of 22724712 is about 4767.0443673203. The cubic root of 22724712 is about 283.2475286504.

It can be divided in two parts, 22724 and 712, that added together give a triangular number (23436 = T₂₁₆).

The spelling of 22724712 in words is "twenty-two million, seven hundred twenty-four thousand, seven hundred twelve".