20819422830 has 64 divisors (see below), whose sum is σ = 50670619200. Its totient is φ = 5474171904.

The previous prime is 20819422823. The next prime is 20819422837. The reversal of 20819422830 is 3822491802.

It is an interprime number because it is at equal distance from previous prime (20819422823) and next prime (20819422837).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20819422837) 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, 595392 + ... + 629388.

It is an arithmetic number, because the mean of its divisors is an integer number (791728425).

Almost surely, 2^20819422830 is an apocalyptic number.

20819422830 is an abundant number, since it is smaller than the sum of its proper divisors (29851196370).

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

20819422830 is a wasteful number, since it uses less digits than its factorization.

20819422830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34293.

The product of its (nonzero) digits is 55296, while the sum is 39.

The spelling of 20819422830 in words is "twenty billion, eight hundred nineteen million, four hundred twenty-two thousand, eight hundred thirty".