20047265 has 16 divisors (see below), whose sum is σ = 28442880. Its totient is φ = 13272000.

The previous prime is 20047259. The next prime is 20047273. The reversal of 20047265 is 56274002.

It is not a de Polignac number, because 20047265 - 2⁶ = 20047201 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8861 + ... + 10890.

It is an arithmetic number, because the mean of its divisors is an integer number (1777680).

Almost surely, 2^20047265 is an apocalyptic number.

It is an amenable number.

20047265 is a deficient number, since it is larger than the sum of its proper divisors (8395615).

20047265 is a wasteful number, since it uses less digits than its factorization.

20047265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19792.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 20047265 is about 4477.4172242488. The cubic root of 20047265 is about 271.6554216848.

The spelling of 20047265 in words is "twenty million, forty-seven thousand, two hundred sixty-five".