20572384 has 24 divisors (see below), whose sum is σ = 46288368. Its totient is φ = 8816640.

The previous prime is 20572381. The next prime is 20572399. The reversal of 20572384 is 48327502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20572381) 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, 45697 + ... + 46144.

It is an arithmetic number, because the mean of its divisors is an integer number (1928682).

Almost surely, 2^20572384 is an apocalyptic number.

It is an amenable number.

20572384 is an abundant number, since it is smaller than the sum of its proper divisors (25715984).

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

20572384 is an equidigital number, since it uses as much as digits as its factorization.

20572384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91858 (or 91850 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 20572384 is about 4535.6790009876. The cubic root of 20572384 is about 274.0069261396.

Adding to 20572384 its reverse (48327502), we get a palindrome (68899886).

The spelling of 20572384 in words is "twenty million, five hundred seventy-two thousand, three hundred eighty-four".