899297280 has 624 divisors, whose sum is σ = 3864055104. Its totient is φ = 188743680.

The previous prime is 899297257. The next prime is 899297351. The reversal of 899297280 is 82792998.

It is a congruent number.

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, 21934060 + ... + 21934100.

It is an arithmetic number, because the mean of its divisors is an integer number (6192396).

Almost surely, 2^899297280 is an apocalyptic number.

899297280 is a gapful number since it is divisible by the number (80) 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 899297280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1932027552).

899297280 is an abundant number, since it is smaller than the sum of its proper divisors (2964757824).

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

899297280 is a wasteful number, since it uses less digits than its factorization.

899297280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100 (or 75 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 54.

The square root of 899297280 is about 29988.2857129246. The cubic root of 899297280 is about 965.2380344724.

The spelling of 899297280 in words is "eight hundred ninety-nine million, two hundred ninety-seven thousand, two hundred eighty".