998730920 has 32 divisors (see below), whose sum is σ = 2451431520. Its totient is φ = 363174720.

The previous prime is 998730919. The next prime is 998730983. The reversal of 998730920 is 29037899.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

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, 1134482 + ... + 1135361.

It is an arithmetic number, because the mean of its divisors is an integer number (76607235).

Almost surely, 2^998730920 is an apocalyptic number.

It is an amenable number.

998730920 is an abundant number, since it is smaller than the sum of its proper divisors (1452700600).

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

998730920 is a wasteful number, since it uses less digits than its factorization.

998730920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2269865 (or 2269861 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 47.

The square root of 998730920 is about 31602.7043146627. The cubic root of 998730920 is about 999.5767942555.

The spelling of 998730920 in words is "nine hundred ninety-eight million, seven hundred thirty thousand, nine hundred twenty".