20551268 has 12 divisors (see below), whose sum is σ = 36001392. Its totient is φ = 10265160.

The previous prime is 20551253. The next prime is 20551277. The reversal of 20551268 is 86215502.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 20551268.

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, 3263 + ... + 7193.

It is an arithmetic number, because the mean of its divisors is an integer number (3000116).

Almost surely, 2^20551268 is an apocalyptic number.

It is an amenable number.

20551268 is a deficient number, since it is larger than the sum of its proper divisors (15450124).

20551268 is a wasteful number, since it uses less digits than its factorization.

20551268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5242 (or 5240 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 20551268 is about 4533.3506372219. The cubic root of 20551268 is about 273.9131449005.

The spelling of 20551268 in words is "twenty million, five hundred fifty-one thousand, two hundred sixty-eight".