898275840 has 640 divisors, whose sum is σ = 3771187200. Its totient is φ = 180633600.

The previous prime is 898275827. The next prime is 898275887. The reversal of 898275840 is 48572898.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (640).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 28976625 + ... + 28976655.

It is an arithmetic number, because the mean of its divisors is an integer number (5892480).

Almost surely, 2^898275840 is an apocalyptic number.

898275840 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 898275840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1885593600).

898275840 is an abundant number, since it is smaller than the sum of its proper divisors (2872911360).

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

898275840 is a wasteful number, since it uses less digits than its factorization.

898275840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89 (or 59 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 51.

The square root of 898275840 is about 29971.2502241732. The cubic root of 898275840 is about 964.8724504116.

The spelling of 898275840 in words is "eight hundred ninety-eight million, two hundred seventy-five thousand, eight hundred forty".