20764275 has 24 divisors (see below), whose sum is σ = 39235584. Its totient is φ = 9492000.

The previous prime is 20764243. The next prime is 20764297. The reversal of 20764275 is 57246702.

It is not a de Polignac number, because 20764275 - 2⁵ = 20764243 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19251 + ... + 20300.

It is an arithmetic number, because the mean of its divisors is an integer number (1634816).

Almost surely, 2^20764275 is an apocalyptic number.

20764275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20764275 is a deficient number, since it is larger than the sum of its proper divisors (18471309).

20764275 is a wasteful number, since it uses less digits than its factorization.

20764275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39571 (or 39566 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 33.

The square root of 20764275 is about 4556.7834049908. The cubic root of 20764275 is about 274.8562333936.

The spelling of 20764275 in words is "twenty million, seven hundred sixty-four thousand, two hundred seventy-five".