22439005380 has 144 divisors (see below), whose sum is σ = 75654057024. Its totient is φ = 5337096960.

The previous prime is 22439005297. The next prime is 22439005399. The reversal of 22439005380 is 8350093422.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1974 + ... + 211853.

It is an arithmetic number, because the mean of its divisors is an integer number (525375396).

Almost surely, 2^22439005380 is an apocalyptic number.

22439005380 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 22439005380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37827028512).

22439005380 is an abundant number, since it is smaller than the sum of its proper divisors (53215051644).

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

22439005380 is a wasteful number, since it uses less digits than its factorization.

22439005380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213906 (or 213901 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The spelling of 22439005380 in words is "twenty-two billion, four hundred thirty-nine million, five thousand, three hundred eighty".