20764026 has 20 divisors (see below), whose sum is σ = 46527162. Its totient is φ = 6921288.

The previous prime is 20763991. The next prime is 20764039. The reversal of 20764026 is 62046702.

It can be written as a sum of positive squares in only one way, i.e., 10556001 + 10208025 = 3249^2 + 3195^2 .

It is a super-2 number, since 2×20764026² = 862289551457352, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 63925 + ... + 64248.

Almost surely, 2^20764026 is an apocalyptic number.

20764026 is an abundant number, since it is smaller than the sum of its proper divisors (25763136).

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

20764026 is a wasteful number, since it uses less digits than its factorization.

20764026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128187 (or 128178 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 20764026 is about 4556.7560830047. The cubic root of 20764026 is about 274.8551347201.

The spelling of 20764026 in words is "twenty million, seven hundred sixty-four thousand, twenty-six".