22047472 has 10 divisors (see below), whose sum is σ = 42717008. Its totient is φ = 11023728.

The previous prime is 22047461. The next prime is 22047497. The reversal of 22047472 is 27474022.

It is a self number, because there is not a number n which added to its sum of digits gives 22047472.

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 as a sum of consecutive naturals, namely, 688968 + ... + 688999.

Almost surely, 2^22047472 is an apocalyptic number.

It is an amenable number.

22047472 is a deficient number, since it is larger than the sum of its proper divisors (20669536).

22047472 is a wasteful number, since it uses less digits than its factorization.

22047472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1377975 (or 1377969 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 28.

The square root of 22047472 is about 4695.4735650411. The cubic root of 22047472 is about 280.4053313218.

The spelling of 22047472 in words is "twenty-two million, forty-seven thousand, four hundred seventy-two".