20965268 has 12 divisors (see below), whose sum is σ = 37584372. Its totient is φ = 10226880.

The previous prime is 20965253. The next prime is 20965271. The reversal of 20965268 is 86256902.

It can be written as a sum of positive squares in 2 ways, for example, as 3139984 + 17825284 = 1772^2 + 4222^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63755 + ... + 64082.

It is an arithmetic number, because the mean of its divisors is an integer number (3132031).

Almost surely, 2^20965268 is an apocalyptic number.

It is an amenable number.

20965268 is a deficient number, since it is larger than the sum of its proper divisors (16619104).

20965268 is a wasteful number, since it uses less digits than its factorization.

20965268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127882 (or 127880 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 20965268 is about 4578.7845548792. The cubic root of 20965268 is about 275.7402337803.

The spelling of 20965268 in words is "twenty million, nine hundred sixty-five thousand, two hundred sixty-eight".