2175622440 has 256 divisors, whose sum is σ = 7054387200. Its totient is φ = 535501824.

The previous prime is 2175622429. The next prime is 2175622469. The reversal of 2175622440 is 442265712.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 15651891 + ... + 15652029.

It is an arithmetic number, because the mean of its divisors is an integer number (27556200).

Almost surely, 2^2175622440 is an apocalyptic number.

2175622440 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 2175622440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3527193600).

2175622440 is an abundant number, since it is smaller than the sum of its proper divisors (4878764760).

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

2175622440 is a wasteful number, since it uses less digits than its factorization.

2175622440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336 (or 332 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 33.

The square root of 2175622440 is about 46643.5680453372. The cubic root of 2175622440 is about 1295.7697683920.

The spelling of 2175622440 in words is "two billion, one hundred seventy-five million, six hundred twenty-two thousand, four hundred forty".