22947444 has 36 divisors (see below), whose sum is σ = 62469316. Its totient is φ = 7060608.

The previous prime is 22947427. The next prime is 22947451. The reversal of 22947444 is 44474922.

It can be written as a sum of positive squares in 2 ways, for example, as 3920400 + 19027044 = 1980^2 + 4362^2 .

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

It is a super-2 number, since 2×22947444² = 1053170372266272, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 22947399 and 22947408.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24049 + ... + 24984.

Almost surely, 2^22947444 is an apocalyptic number.

It is an amenable number.

22947444 is an abundant number, since it is smaller than the sum of its proper divisors (39521872).

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

22947444 is a wasteful number, since it uses less digits than its factorization.

22947444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49056 (or 49051 counting only the distinct ones).

The product of its digits is 64512, while the sum is 36.

The square root of 22947444 is about 4790.3490478252. The cubic root of 22947444 is about 284.1699207963.

The spelling of 22947444 in words is "twenty-two million, nine hundred forty-seven thousand, four hundred forty-four".