2172288888 has 256 divisors, whose sum is σ = 7570944000. Its totient is φ = 560649600.

The previous prime is 2172288871. The next prime is 2172288893. The reversal of 2172288888 is 8888822712.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

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, 3509043 + ... + 3509661.

It is an arithmetic number, because the mean of its divisors is an integer number (29574000).

Almost surely, 2^2172288888 is an apocalyptic number.

2172288888 is a gapful number since it is divisible by the number (28) 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 2172288888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3785472000).

2172288888 is an abundant number, since it is smaller than the sum of its proper divisors (5398655112).

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

2172288888 is a wasteful number, since it uses less digits than its factorization.

2172288888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 863 (or 853 counting only the distinct ones).

The product of its digits is 1835008, while the sum is 54.

The square root of 2172288888 is about 46607.8200305485. The cubic root of 2172288888 is about 1295.1076247121.

The spelling of 2172288888 in words is "two billion, one hundred seventy-two million, two hundred eighty-eight thousand, eight hundred eighty-eight".