22455400188 has 192 divisors, whose sum is σ = 60150988800. Its totient is φ = 6471429120.

The previous prime is 22455400169. The next prime is 22455400199. The reversal of 22455400188 is 88100455422.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 20247778 + ... + 20248886.

It is an arithmetic number, because the mean of its divisors is an integer number (313286400).

Almost surely, 2^22455400188 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22455400188, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30075494400).

22455400188 is an abundant number, since it is smaller than the sum of its proper divisors (37695588612).

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

22455400188 is a wasteful number, since it uses less digits than its factorization.

22455400188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1292 (or 1290 counting only the distinct ones).

The product of its (nonzero) digits is 102400, while the sum is 39.

The spelling of 22455400188 in words is "twenty-two billion, four hundred fifty-five million, four hundred thousand, one hundred eighty-eight".