20572452 has 36 divisors (see below), whose sum is σ = 52140816. Its totient is φ = 6839280.

The previous prime is 20572451. The next prime is 20572457. The reversal of 20572452 is 25427502.

20572452 is a `hidden beast` number, since 205 + 7 + 2 + 452 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (20572451) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24463 + ... + 25289.

It is an arithmetic number, because the mean of its divisors is an integer number (1448356).

Almost surely, 2^20572452 is an apocalyptic number.

It is an amenable number.

20572452 is an abundant number, since it is smaller than the sum of its proper divisors (31568364).

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

20572452 is a wasteful number, since it uses less digits than its factorization.

20572452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1528 (or 1523 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 27.

The square root of 20572452 is about 4535.6864971027. The cubic root of 20572452 is about 274.0072280403.

Adding to 20572452 its reverse (25427502), we get a palindrome (45999954).

The spelling of 20572452 in words is "twenty million, five hundred seventy-two thousand, four hundred fifty-two".