322742420820 has 36 divisors (see below), whose sum is σ = 978985343700. Its totient is φ = 86064645504.

The previous prime is 322742420771. The next prime is 322742420843. The reversal of 322742420820 is 28024247223.

322742420820 is a `hidden beast` number, since 3 + 2 + 2 + 7 + 424 + 208 + 20 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 250292085264 + 72450335556 = 500292^2 + 269166^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-4 number, since 4×322742420820⁴ (a number of 47 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 896506545 + ... + 896506904.

It is an arithmetic number, because the mean of its divisors is an integer number (27194037325).

Almost surely, 2^322742420820 is an apocalyptic number.

322742420820 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

322742420820 is an abundant number, since it is smaller than the sum of its proper divisors (656242922880).

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

322742420820 is a wasteful number, since it uses less digits than its factorization.

322742420820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1793013464 (or 1793013459 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 36.

The spelling of 322742420820 in words is "three hundred twenty-two billion, seven hundred forty-two million, four hundred twenty thousand, eight hundred twenty".