22279349040 has 80 divisors (see below), whose sum is σ = 74378760288. Its totient is φ = 5484146688.

The previous prime is 22279349021. The next prime is 22279349047. The reversal of 22279349040 is 4094397222.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×22279349040² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 22279348983 and 22279349001.

It is not an unprimeable number, because it can be changed into a prime (22279349047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3567289 + ... + 3573528.

Almost surely, 2^22279349040 is an apocalyptic number.

22279349040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22279349040 is an abundant number, since it is smaller than the sum of its proper divisors (52099411248).

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

22279349040 is a wasteful number, since it uses less digits than its factorization.

22279349040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7140846 (or 7140840 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 42.

The spelling of 22279349040 in words is "twenty-two billion, two hundred seventy-nine million, three hundred forty-nine thousand, forty".