22406486840 has 64 divisors (see below), whose sum is σ = 52638465600. Its totient is φ = 8567713792.

The previous prime is 22406486819. The next prime is 22406486857. The reversal of 22406486840 is 4868460422.

It is a super-2 number, since 2×22406486840² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22406486791 and 22406486800.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1731434 + ... + 1744326.

It is an arithmetic number, because the mean of its divisors is an integer number (822476025).

Almost surely, 2^22406486840 is an apocalyptic number.

22406486840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22406486840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26319232800).

22406486840 is an abundant number, since it is smaller than the sum of its proper divisors (30231978760).

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

22406486840 is a wasteful number, since it uses less digits than its factorization.

22406486840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14816 (or 14812 counting only the distinct ones).

The product of its (nonzero) digits is 589824, while the sum is 44.

The spelling of 22406486840 in words is "twenty-two billion, four hundred six million, four hundred eighty-six thousand, eight hundred forty".