20564476 has 12 divisors (see below), whose sum is σ = 36093400. Its totient is φ = 10252080.

The previous prime is 20564473. The next prime is 20564491. The reversal of 20564476 is 67446502.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20564473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5970 + ... + 8761.

Almost surely, 2^20564476 is an apocalyptic number.

It is an amenable number.

20564476 is a deficient number, since it is larger than the sum of its proper divisors (15528924).

20564476 is a wasteful number, since it uses less digits than its factorization.

20564476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15084 (or 15082 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 34.

The square root of 20564476 is about 4534.8071623830. The cubic root of 20564476 is about 273.9718123275.

The spelling of 20564476 in words is "twenty million, five hundred sixty-four thousand, four hundred seventy-six".