20347190682 has 48 divisors (see below), whose sum is σ = 50360604480. Its totient is φ = 5366290176.

The previous prime is 20347190681. The next prime is 20347190693. The reversal of 20347190682 is 28609174302.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (20347190681) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1426207 + ... + 1440402.

It is an arithmetic number, because the mean of its divisors is an integer number (1049179260).

Almost surely, 2^20347190682 is an apocalyptic number.

20347190682 is an abundant number, since it is smaller than the sum of its proper divisors (30013413798).

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

20347190682 is a wasteful number, since it uses less digits than its factorization.

20347190682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2866647 (or 2866634 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 42.

The spelling of 20347190682 in words is "twenty billion, three hundred forty-seven million, one hundred ninety thousand, six hundred eighty-two".