22872637440 has 420 divisors, whose sum is σ = 82516218624. Its totient is φ = 6083444736.

The previous prime is 22872637429. The next prime is 22872637451. The reversal of 22872637440 is 4473627822.

22872637440 is a `hidden beast` number, since 2 + 2 + 8 + 7 + 2 + 637 + 4 + 4 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (22872637429) and next prime (22872637451).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 59719489 + ... + 59719871.

Almost surely, 2^22872637440 is an apocalyptic number.

22872637440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22872637440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41258109312).

22872637440 is an abundant number, since it is smaller than the sum of its proper divisors (59643581184).

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

22872637440 is an frugal number, since it uses more digits than its factorization.

22872637440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434 (or 393 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 45.

The spelling of 22872637440 in words is "twenty-two billion, eight hundred seventy-two million, six hundred thirty-seven thousand, four hundred forty".