20389476258 has 24 divisors (see below), whose sum is σ = 44255688048. Its totient is φ = 6784416792.

The previous prime is 20389476253. The next prime is 20389476293. The reversal of 20389476258 is 85267498302.

20389476258 is a `hidden beast` number, since 2 + 0 + 3 + 8 + 9 + 4 + 7 + 625 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (20389476253) 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, 995860 + ... + 1016127.

It is an arithmetic number, because the mean of its divisors is an integer number (1843987002).

Almost surely, 2^20389476258 is an apocalyptic number.

20389476258 is an abundant number, since it is smaller than the sum of its proper divisors (23866211790).

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

20389476258 is a wasteful number, since it uses less digits than its factorization.

20389476258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2012558 (or 2012555 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 54.

The spelling of 20389476258 in words is "twenty billion, three hundred eighty-nine million, four hundred seventy-six thousand, two hundred fifty-eight".