20464090308 has 36 divisors (see below), whose sum is σ = 51996714588. Its totient is φ = 6786017280.

The previous prime is 20464090303. The next prime is 20464090331. The reversal of 20464090308 is 80309046402.

It is a happy number.

20464090308 is a `hidden beast` number, since 2 + 0 + 4 + 640 + 9 + 0 + 3 + 0 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 14590707264 + 5873383044 = 120792^2 + 76638^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (20464090303) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1465713 + ... + 1479608.

It is an arithmetic number, because the mean of its divisors is an integer number (1444353183).

Almost surely, 2^20464090308 is an apocalyptic number.

It is an amenable number.

20464090308 is an abundant number, since it is smaller than the sum of its proper divisors (31532624280).

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

20464090308 is a wasteful number, since it uses less digits than its factorization.

20464090308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2945524 (or 2945519 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The spelling of 20464090308 in words is "twenty billion, four hundred sixty-four million, ninety thousand, three hundred eight".