22090244640 has 48 divisors (see below), whose sum is σ = 69584272128. Its totient is φ = 5890731776.

The previous prime is 22090244633. The next prime is 22090244653. The reversal of 22090244640 is 4644209022.

It is a tau number, because it is divible by the number of its divisors (48).

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

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 7 ways as a sum of consecutive naturals, for example, 23010192 + ... + 23011151.

It is an arithmetic number, because the mean of its divisors is an integer number (1449672336).

Almost surely, 2^22090244640 is an apocalyptic number.

22090244640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22090244640 is an abundant number, since it is smaller than the sum of its proper divisors (47494027488).

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

22090244640 is a wasteful number, since it uses less digits than its factorization.

22090244640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46021361 (or 46021353 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 33.

The spelling of 22090244640 in words is "twenty-two billion, ninety million, two hundred forty-four thousand, six hundred forty".