998427264 has 128 divisors (see below), whose sum is σ = 2726092800. Its totient is φ = 323656704.

The previous prime is 998427253. The next prime is 998427281. The reversal of 998427264 is 462724899.

It is a tau number, because it is divible by the number of its divisors (128).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2877139 + ... + 2877485.

It is an arithmetic number, because the mean of its divisors is an integer number (21297600).

Almost surely, 2^998427264 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 998427264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1363046400).

998427264 is an abundant number, since it is smaller than the sum of its proper divisors (1727665536).

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

998427264 is a wasteful number, since it uses less digits than its factorization.

998427264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550 (or 538 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 51.

The square root of 998427264 is about 31597.8996770355. The cubic root of 998427264 is about 999.4754795931.

The spelling of 998427264 in words is "nine hundred ninety-eight million, four hundred twenty-seven thousand, two hundred sixty-four".