20315307428 has 96 divisors (see below), whose sum is σ = 42522278400. Its totient is φ = 8396974080.

The previous prime is 20315307421. The next prime is 20315307499. The reversal of 20315307428 is 82470351302.

It is not an unprimeable number, because it can be changed into a prime (20315307421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4043558 + ... + 4048578.

It is an arithmetic number, because the mean of its divisors is an integer number (442940400).

Almost surely, 2^20315307428 is an apocalyptic number.

It is an amenable number.

20315307428 is an abundant number, since it is smaller than the sum of its proper divisors (22206970972).

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

20315307428 is a wasteful number, since it uses less digits than its factorization.

20315307428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5277 (or 5275 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 35.

The spelling of 20315307428 in words is "twenty billion, three hundred fifteen million, three hundred seven thousand, four hundred twenty-eight".