20365572 has 24 divisors (see below), whose sum is σ = 47983936. Its totient is φ = 6722208.

The previous prime is 20365567. The next prime is 20365573. The reversal of 20365572 is 27556302.

It is not an unprimeable number, because it can be changed into a prime (20365573) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7003 + ... + 9474.

Almost surely, 2^20365572 is an apocalyptic number.

It is an amenable number.

20365572 is an abundant number, since it is smaller than the sum of its proper divisors (27618364).

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

20365572 is a wasteful number, since it uses less digits than its factorization.

20365572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16587 (or 16585 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 30.

The square root of 20365572 is about 4512.8230632277. The cubic root of 20365572 is about 273.0856444786.

The spelling of 20365572 in words is "twenty million, three hundred sixty-five thousand, five hundred seventy-two".