22687256280 has 384 divisors, whose sum is σ = 78507878400. Its totient is φ = 5227462656.

The previous prime is 22687256239. The next prime is 22687256351. The reversal of 22687256280 is 8265278622.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 37375737 + ... + 37376343.

It is an arithmetic number, because the mean of its divisors is an integer number (204447600).

Almost surely, 2^22687256280 is an apocalyptic number.

22687256280 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 22687256280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39253939200).

22687256280 is an abundant number, since it is smaller than the sum of its proper divisors (55820622120).

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

22687256280 is a wasteful number, since it uses less digits than its factorization.

22687256280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 763 (or 746 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 48.

The spelling of 22687256280 in words is "twenty-two billion, six hundred eighty-seven million, two hundred fifty-six thousand, two hundred eighty".