20894572 has 6 divisors (see below), whose sum is σ = 36565508. Its totient is φ = 10447284.

The previous prime is 20894569. The next prime is 20894579. The reversal of 20894572 is 27549802.

It is not an unprimeable number, because it can be changed into a prime (20894579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2611818 + ... + 2611825.

Almost surely, 2^20894572 is an apocalyptic number.

It is an amenable number.

20894572 is a deficient number, since it is larger than the sum of its proper divisors (15670936).

20894572 is a wasteful number, since it uses less digits than its factorization.

20894572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5223647 (or 5223645 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 20894572 is about 4571.0580832013. The cubic root of 20894572 is about 275.4299478348.

The spelling of 20894572 in words is "twenty million, eight hundred ninety-four thousand, five hundred seventy-two".