20266120 has 32 divisors (see below), whose sum is σ = 52113600. Its totient is φ = 6948288.

The previous prime is 20266111. The next prime is 20266153. The reversal of 20266120 is 2166202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35910 + ... + 36469.

It is an arithmetic number, because the mean of its divisors is an integer number (1628550).

Almost surely, 2^20266120 is an apocalyptic number.

20266120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20266120 is an abundant number, since it is smaller than the sum of its proper divisors (31847480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20266120 is a wasteful number, since it uses less digits than its factorization.

20266120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72397 (or 72393 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 20266120 is about 4501.7907547997. The cubic root of 20266120 is about 272.6403956280.

The spelling of 20266120 in words is "twenty million, two hundred sixty-six thousand, one hundred twenty".