20120265 has 64 divisors (see below), whose sum is σ = 41368320. Its totient is φ = 9169920.

The previous prime is 20120263. The next prime is 20120281. The reversal of 20120265 is 56202102.

It is not a de Polignac number, because 20120265 - 2¹ = 20120263 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20120263) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 24847 + ... + 25643.

It is an arithmetic number, because the mean of its divisors is an integer number (646380).

Almost surely, 2^20120265 is an apocalyptic number.

It is an amenable number.

20120265 is an abundant number, since it is smaller than the sum of its proper divisors (21248055).

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

20120265 is a wasteful number, since it uses less digits than its factorization.

20120265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 839 (or 833 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 20120265 is about 4485.5618377189. The cubic root of 20120265 is about 271.9847571115.

Adding to 20120265 its reverse (56202102), we get a palindrome (76322367).

The spelling of 20120265 in words is "twenty million, one hundred twenty thousand, two hundred sixty-five".