20465650 has 24 divisors (see below), whose sum is σ = 38283264. Its totient is φ = 8139600.

The previous prime is 20465647. The next prime is 20465659. The reversal of 20465650 is 5656402.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (20465659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8479 + ... + 10621.

It is an arithmetic number, because the mean of its divisors is an integer number (1595136).

Almost surely, 2^20465650 is an apocalyptic number.

20465650 is a deficient number, since it is larger than the sum of its proper divisors (17817614).

20465650 is a wasteful number, since it uses less digits than its factorization.

20465650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2346 (or 2341 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 20465650 is about 4523.8976557831. The cubic root of 20465650 is about 273.5322350927.

It can be divided in two parts, 20465 and 650, that added together give a triangular number (21115 = T₂₀₅).

The spelling of 20465650 in words is "twenty million, four hundred sixty-five thousand, six hundred fifty".