20969265 has 8 divisors (see below), whose sum is σ = 33550848. Its totient is φ = 11183600.

The previous prime is 20969239. The next prime is 20969281. The reversal of 20969265 is 56296902.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20969265 - 2⁸ = 20969009 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 698961 + ... + 698990.

It is an arithmetic number, because the mean of its divisors is an integer number (4193856).

Almost surely, 2^20969265 is an apocalyptic number.

It is an amenable number.

20969265 is a deficient number, since it is larger than the sum of its proper divisors (12581583).

20969265 is a wasteful number, since it uses less digits than its factorization.

20969265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1397959.

The product of its (nonzero) digits is 58320, while the sum is 39.

The square root of 20969265 is about 4579.2210036206. The cubic root of 20969265 is about 275.7577558344.

The spelling of 20969265 in words is "twenty million, nine hundred sixty-nine thousand, two hundred sixty-five".