20372265 has 24 divisors (see below), whose sum is σ = 35650368. Its totient is φ = 10761120.

The previous prime is 20372263. The next prime is 20372279. The reversal of 20372265 is 56227302.

It is not a de Polignac number, because 20372265 - 2¹ = 20372263 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20372263) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2700 + ... + 6930.

It is an arithmetic number, because the mean of its divisors is an integer number (1485432).

Almost surely, 2^20372265 is an apocalyptic number.

It is an amenable number.

20372265 is a deficient number, since it is larger than the sum of its proper divisors (15278103).

20372265 is a wasteful number, since it uses less digits than its factorization.

20372265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4349 (or 4346 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 20372265 is about 4513.5645558693. The cubic root of 20372265 is about 273.1155570851.

Adding to 20372265 its reverse (56227302), we get a palindrome (76599567).

The spelling of 20372265 in words is "twenty million, three hundred seventy-two thousand, two hundred sixty-five".