998424578 has 16 divisors (see below), whose sum is σ = 1598667840. Its totient is φ = 466275600.

The previous prime is 998424527. The next prime is 998424587. The reversal of 998424578 is 875424899.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182333 + ... + 187728.

It is an arithmetic number, because the mean of its divisors is an integer number (99916740).

Almost surely, 2^998424578 is an apocalyptic number.

998424578 is a deficient number, since it is larger than the sum of its proper divisors (600243262).

998424578 is a wasteful number, since it uses less digits than its factorization.

998424578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370153.

The product of its digits is 5806080, while the sum is 56.

The square root of 998424578 is about 31597.8571741819. The cubic root of 998424578 is about 999.4745833190.

The spelling of 998424578 in words is "nine hundred ninety-eight million, four hundred twenty-four thousand, five hundred seventy-eight".