20572365 has 32 divisors (see below), whose sum is σ = 36796032. Its totient is φ = 9728000.

The previous prime is 20572351. The next prime is 20572367. The reversal of 20572365 is 56327502.

It is not a de Polignac number, because 20572365 - 2⁶ = 20572301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20572367) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5245 + ... + 8285.

It is an arithmetic number, because the mean of its divisors is an integer number (1149876).

Almost surely, 2^20572365 is an apocalyptic number.

It is an amenable number.

20572365 is a deficient number, since it is larger than the sum of its proper divisors (16223667).

20572365 is a wasteful number, since it uses less digits than its factorization.

20572365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3101.

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

The square root of 20572365 is about 4535.6769064826. The cubic root of 20572365 is about 274.0068417849.

Adding to 20572365 its reverse (56327502), we get a palindrome (76899867).

The spelling of 20572365 in words is "twenty million, five hundred seventy-two thousand, three hundred sixty-five".