20574472 has 8 divisors (see below), whose sum is σ = 38577150. Its totient is φ = 10287232.

The previous prime is 20574461. The next prime is 20574493. The reversal of 20574472 is 27447502.

It can be written as a sum of positive squares in only one way, i.e., 15256836 + 5317636 = 3906^2 + 2306^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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, 1285897 + ... + 1285912.

Almost surely, 2^20574472 is an apocalyptic number.

It is an amenable number.

20574472 is a deficient number, since it is larger than the sum of its proper divisors (18002678).

20574472 is a wasteful number, since it uses less digits than its factorization.

20574472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2571815 (or 2571811 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 31.

The square root of 20574472 is about 4535.9091701664. The cubic root of 20574472 is about 274.0161959631.

The spelling of 20574472 in words is "twenty million, five hundred seventy-four thousand, four hundred seventy-two".