20112465 has 32 divisors (see below), whose sum is σ = 33981696. Its totient is φ = 10137600.

The previous prime is 20112439. The next prime is 20112473. The reversal of 20112465 is 56421102.

It is not a de Polignac number, because 20112465 - 2⁶ = 20112401 is a prime.

It is a super-2 number, since 2×20112465² = 809022496752450, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33165 + ... + 33765.

It is an arithmetic number, because the mean of its divisors is an integer number (1061928).

Almost surely, 2^20112465 is an apocalyptic number.

It is an amenable number.

20112465 is a deficient number, since it is larger than the sum of its proper divisors (13869231).

20112465 is a wasteful number, since it uses less digits than its factorization.

20112465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 729.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 20112465 is about 4484.6922971370. The cubic root of 20112465 is about 271.9496058961.

Adding to 20112465 its reverse (56421102), we get a palindrome (76533567).

The spelling of 20112465 in words is "twenty million, one hundred twelve thousand, four hundred sixty-five".