22978660240 has 20 divisors (see below), whose sum is σ = 53425385244. Its totient is φ = 9191464064.

The previous prime is 22978660219. The next prime is 22978660247. The reversal of 22978660240 is 4206687922.

It can be written as a sum of positive squares in 2 ways, for example, as 11998135296 + 10980524944 = 109536^2 + 104788^2 .

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

It is a super-3 number, since 3×22978660240³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (22978660247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143616547 + ... + 143616706.

Almost surely, 2^22978660240 is an apocalyptic number.

22978660240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22978660240 is an abundant number, since it is smaller than the sum of its proper divisors (30446725004).

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

22978660240 is a wasteful number, since it uses less digits than its factorization.

22978660240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287233266 (or 287233260 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 46.

The spelling of 22978660240 in words is "twenty-two billion, nine hundred seventy-eight million, six hundred sixty thousand, two hundred forty".