22775724 has 36 divisors (see below), whose sum is σ = 58914856. Its totient is φ = 7414848.

The previous prime is 22775719. The next prime is 22775729. The reversal of 22775724 is 42757722.

It is an interprime number because it is at equal distance from previous prime (22775719) and next prime (22775729).

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (22775729) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5809 + ... + 8904.

Almost surely, 2^22775724 is an apocalyptic number.

It is an amenable number.

22775724 is an abundant number, since it is smaller than the sum of its proper divisors (36139132).

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

22775724 is a wasteful number, since it uses less digits than its factorization.

22775724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14766 (or 14761 counting only the distinct ones).

The product of its digits is 54880, while the sum is 36.

The square root of 22775724 is about 4772.3918531487. The cubic root of 22775724 is about 283.4593131424.

It can be divided in two parts, 2277 and 5724, that added together give a triangular number (8001 = T₁₂₆).

The spelling of 22775724 in words is "twenty-two million, seven hundred seventy-five thousand, seven hundred twenty-four".