20702274684 has 96 divisors (see below), whose sum is σ = 59586508800. Its totient is φ = 5447651328.

The previous prime is 20702274673. The next prime is 20702274713. The reversal of 20702274684 is 48647220702.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 469197 + ... + 511419.

It is an arithmetic number, because the mean of its divisors is an integer number (620692800).

Almost surely, 2^20702274684 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20702274684, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29793254400).

20702274684 is an abundant number, since it is smaller than the sum of its proper divisors (38884234116).

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

20702274684 is a wasteful number, since it uses less digits than its factorization.

20702274684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42699 (or 42697 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 42.

The spelling of 20702274684 in words is "twenty billion, seven hundred two million, two hundred seventy-four thousand, six hundred eighty-four".