20430928458 has 16 divisors (see below), whose sum is σ = 45402063360. Its totient is φ = 6810309468.

The previous prime is 20430928447. The next prime is 20430928459. The reversal of 20430928458 is 85482903402.

20430928458 is a `hidden beast` number, since 2 + 0 + 430 + 92 + 84 + 58 = 666.

It is a hoax number, since the sum of its digits (45) 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 (20430928459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189175210 + ... + 189175317.

It is an arithmetic number, because the mean of its divisors is an integer number (2837628960).

Almost surely, 2^20430928458 is an apocalyptic number.

20430928458 is an abundant number, since it is smaller than the sum of its proper divisors (24971134902).

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

20430928458 is a wasteful number, since it uses less digits than its factorization.

20430928458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378350538 (or 378350532 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The spelling of 20430928458 in words is "twenty billion, four hundred thirty million, nine hundred twenty-eight thousand, four hundred fifty-eight".