20514765 has 16 divisors (see below), whose sum is σ = 32887296. Its totient is φ = 10920000.

The previous prime is 20514757. The next prime is 20514787. The reversal of 20514765 is 56741502.

It is not a de Polignac number, because 20514765 - 2³ = 20514757 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9540 + ... + 11490.

It is an arithmetic number, because the mean of its divisors is an integer number (2055456).

Almost surely, 2^20514765 is an apocalyptic number.

It is an amenable number.

20514765 is a deficient number, since it is larger than the sum of its proper divisors (12372531).

20514765 is a wasteful number, since it uses less digits than its factorization.

20514765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2660.

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 20514765 is about 4529.3227970636. The cubic root of 20514765 is about 273.7508746662.

The spelling of 20514765 in words is "twenty million, five hundred fourteen thousand, seven hundred sixty-five".