899255520 has 288 divisors, whose sum is σ = 3227908320. Its totient is φ = 236390400.

The previous prime is 899255507. The next prime is 899255549. The reversal of 899255520 is 25552998.

899255520 is a `hidden beast` number, since 8 + 9 + 92 + 5 + 552 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 3926766 + ... + 3926994.

It is an arithmetic number, because the mean of its divisors is an integer number (11208015).

Almost surely, 2^899255520 is an apocalyptic number.

899255520 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 899255520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1613954160).

899255520 is an abundant number, since it is smaller than the sum of its proper divisors (2328652800).

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

899255520 is a wasteful number, since it uses less digits than its factorization.

899255520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360 (or 340 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 45.

The square root of 899255520 is about 29987.5894329638. The cubic root of 899255520 is about 965.2230935605.

The spelling of 899255520 in words is "eight hundred ninety-nine million, two hundred fifty-five thousand, five hundred twenty".