20102440308 has 48 divisors (see below), whose sum is σ = 47505432576. Its totient is φ = 6615254880.

The previous prime is 20102440307. The next prime is 20102440357. The reversal of 20102440308 is 80304420102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20102440307) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1518285 + ... + 1531467.

It is an arithmetic number, because the mean of its divisors is an integer number (989696512).

Almost surely, 2^20102440308 is an apocalyptic number.

It is an amenable number.

20102440308 is an abundant number, since it is smaller than the sum of its proper divisors (27402992268).

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

20102440308 is a wasteful number, since it uses less digits than its factorization.

20102440308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14804 (or 14802 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The spelling of 20102440308 in words is "twenty billion, one hundred two million, four hundred forty thousand, three hundred eight".