22742321940 has 96 divisors (see below), whose sum is σ = 76196520960. Its totient is φ = 5598108288.

The previous prime is 22742321911. The next prime is 22742321993. The reversal of 22742321940 is 4912324722.

It is a happy number.

22742321940 is a `hidden beast` number, since 227 + 423 + 2 + 1 + 9 + 4 + 0 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 22742321895 and 22742321904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1612804 + ... + 1626843.

It is an arithmetic number, because the mean of its divisors is an integer number (793713760).

Almost surely, 2^22742321940 is an apocalyptic number.

22742321940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22742321940 is an abundant number, since it is smaller than the sum of its proper divisors (53454199020).

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

22742321940 is a wasteful number, since it uses less digits than its factorization.

22742321940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3239678 (or 3239670 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The spelling of 22742321940 in words is "twenty-two billion, seven hundred forty-two million, three hundred twenty-one thousand, nine hundred forty".