18672022240 has 24 divisors (see below), whose sum is σ = 44112652920. Its totient is φ = 7468808832.

The previous prime is 18672022223. The next prime is 18672022249. The reversal of 18672022240 is 4222027681.

It is a junction number, because it is equal to n+sod(n) for n = 18672022196 and 18672022205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18672022249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58349910 + ... + 58350229.

It is an arithmetic number, because the mean of its divisors is an integer number (1838027205).

Almost surely, 2^18672022240 is an apocalyptic number.

18672022240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18672022240 is an abundant number, since it is smaller than the sum of its proper divisors (25440630680).

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

18672022240 is a wasteful number, since it uses less digits than its factorization.

18672022240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116700154 (or 116700146 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 34.

The spelling of 18672022240 in words is "eighteen billion, six hundred seventy-two million, twenty-two thousand, two hundred forty".