998523456 has 56 divisors (see below), whose sum is σ = 3019348800. Its totient is φ = 285292032.

The previous prime is 998523443. The next prime is 998523469. The reversal of 998523456 is 654325899.

It is an interprime number because it is at equal distance from previous prime (998523443) and next prime (998523469).

It is a tau number, because it is divible by the number of its divisors (56).

It is a junction number, because it is equal to n+sod(n) for n = 998523399 and 998523408.

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, 370131 + ... + 372818.

Almost surely, 2^998523456 is an apocalyptic number.

998523456 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

It is an amenable number.

998523456 is an abundant number, since it is smaller than the sum of its proper divisors (2020825344).

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

998523456 is a wasteful number, since it uses less digits than its factorization.

998523456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 742971 (or 742961 counting only the distinct ones).

The product of its digits is 2332800, while the sum is 51.

The square root of 998523456 is about 31599.4217668615. The cubic root of 998523456 is about 999.5075762253.

The spelling of 998523456 in words is "nine hundred ninety-eight million, five hundred twenty-three thousand, four hundred fifty-six".