22190787840 has 144 divisors (see below), whose sum is σ = 76323679488. Its totient is φ = 5462335488.

The previous prime is 22190787833. The next prime is 22190787841. The reversal of 22190787840 is 4878709122.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 22190787840.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22190787841) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 172344 + ... + 272183.

It is an arithmetic number, because the mean of its divisors is an integer number (530025552).

Almost surely, 2^22190787840 is an apocalyptic number.

22190787840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22190787840 is an abundant number, since it is smaller than the sum of its proper divisors (54132891648).

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

22190787840 is a wasteful number, since it uses less digits than its factorization.

22190787840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444564 (or 444550 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 48.

The spelling of 22190787840 in words is "twenty-two billion, one hundred ninety million, seven hundred eighty-seven thousand, eight hundred forty".