22490677188 has 144 divisors (see below), whose sum is σ = 71399294400. Its totient is φ = 6087674880.

The previous prime is 22490677177. The next prime is 22490677193. The reversal of 22490677188 is 88177609422.

It is a happy number.

22490677188 is a `hidden beast` number, since 2 + 2 + 490 + 6 + 7 + 71 + 88 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11293 + ... + 212388.

Almost surely, 2^22490677188 is an apocalyptic number.

22490677188 is a gapful number since it is divisible by the number (28) 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 22490677188, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35699647200).

22490677188 is an abundant number, since it is smaller than the sum of its proper divisors (48908617212).

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

22490677188 is a wasteful number, since it uses less digits than its factorization.

22490677188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223727 (or 223712 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 54.

The spelling of 22490677188 in words is "twenty-two billion, four hundred ninety million, six hundred seventy-seven thousand, one hundred eighty-eight".