22973535440 has 20 divisors (see below), whose sum is σ = 53413470084. Its totient is φ = 9189414144.

The previous prime is 22973535437. The next prime is 22973535457. The reversal of 22973535440 is 4453537922.

It can be written as a sum of positive squares in 2 ways, for example, as 2373248656 + 20600286784 = 48716^2 + 143528^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×22973535440² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22973535391 and 22973535400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143584517 + ... + 143584676.

Almost surely, 2^22973535440 is an apocalyptic number.

22973535440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22973535440 is an abundant number, since it is smaller than the sum of its proper divisors (30439934644).

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

22973535440 is a wasteful number, since it uses less digits than its factorization.

22973535440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287169206 (or 287169200 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 44.

The spelling of 22973535440 in words is "twenty-two billion, nine hundred seventy-three million, five hundred thirty-five thousand, four hundred forty".