2172289280 has 288 divisors, whose sum is σ = 6329401344. Its totient is φ = 698277888.

The previous prime is 2172289271. The next prime is 2172289309. The reversal of 2172289280 is 829822712.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17104577 + ... + 17104703.

It is an arithmetic number, because the mean of its divisors is an integer number (21977088).

Almost surely, 2^2172289280 is an apocalyptic number.

2172289280 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 2172289280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3164700672).

2172289280 is an abundant number, since it is smaller than the sum of its proper divisors (4157112064).

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

2172289280 is a wasteful number, since it uses less digits than its factorization.

2172289280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261 (or 247 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 41.

The square root of 2172289280 is about 46607.8242358512. The cubic root of 2172289280 is about 1295.1077026149.

The spelling of 2172289280 in words is "two billion, one hundred seventy-two million, two hundred eighty-nine thousand, two hundred eighty".