998257896 has 48 divisors (see below), whose sum is σ = 2705316900. Its totient is φ = 332543232.

The previous prime is 998257847. The next prime is 998257913. The reversal of 998257896 is 698752899.

It can be written as a sum of positive squares in 2 ways, for example, as 985080996 + 13176900 = 31386^2 + 3630^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 147090 + ... + 153726.

Almost surely, 2^998257896 is an apocalyptic number.

It is an amenable number.

998257896 is an abundant number, since it is smaller than the sum of its proper divisors (1707059004).

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

998257896 is a wasteful number, since it uses less digits than its factorization.

998257896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8738 (or 8731 counting only the distinct ones).

The product of its digits is 19595520, while the sum is 63.

The square root of 998257896 is about 31595.2195118186. The cubic root of 998257896 is about 999.4189611259.

The spelling of 998257896 in words is "nine hundred ninety-eight million, two hundred fifty-seven thousand, eight hundred ninety-six".