998774828 has 12 divisors (see below), whose sum is σ = 1749329400. Its totient is φ = 498966432.

The previous prime is 998774827. The next prime is 998774851. The reversal of 998774828 is 828477899.

It is not an unprimeable number, because it can be changed into a prime (998774827) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99878 + ... + 109421.

It is an arithmetic number, because the mean of its divisors is an integer number (145777450).

Almost surely, 2^998774828 is an apocalyptic number.

It is an amenable number.

998774828 is a deficient number, since it is larger than the sum of its proper divisors (750554572).

998774828 is a wasteful number, since it uses less digits than its factorization.

998774828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210496 (or 210494 counting only the distinct ones).

The product of its digits is 16257024, while the sum is 62.

The square root of 998774828 is about 31603.3989944120. The cubic root of 998774828 is about 999.5914424368.

The spelling of 998774828 in words is "nine hundred ninety-eight million, seven hundred seventy-four thousand, eight hundred twenty-eight".