22089047440 has 80 divisors (see below), whose sum is σ = 52845140016. Its totient is φ = 8582912000.

The previous prime is 22089047401. The next prime is 22089047479. The reversal of 22089047440 is 4474098022.

It is an interprime number because it is at equal distance from previous prime (22089047401) and next prime (22089047479).

It can be written as a sum of positive squares in 8 ways, for example, as 10653696 + 22078393744 = 3264^2 + 148588^2 .

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

It is a super-3 number, since 3×22089047440³ (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 22089047393 and 22089047402.

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, 402450 + ... + 454030.

Almost surely, 2^22089047440 is an apocalyptic number.

22089047440 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 22089047440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26422570008).

22089047440 is an abundant number, since it is smaller than the sum of its proper divisors (30756092576).

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

22089047440 is a wasteful number, since it uses less digits than its factorization.

22089047440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51748 (or 51742 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 40.

The spelling of 22089047440 in words is "twenty-two billion, eighty-nine million, forty-seven thousand, four hundred forty".