998264880 has 60 divisors (see below), whose sum is σ = 3352508640. Its totient is φ = 266203776.

The previous prime is 998264879. The next prime is 998264881. The reversal of 998264880 is 88462899.

It is an interprime number because it is at equal distance from previous prime (998264879) and next prime (998264881).

It is a tau number, because it is divible by the number of its divisors (60).

It is not an unprimeable number, because it can be changed into a prime (998264881) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 692520 + ... + 693959.

It is an arithmetic number, because the mean of its divisors is an integer number (55875144).

Almost surely, 2^998264880 is an apocalyptic number.

998264880 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

998264880 is an abundant number, since it is smaller than the sum of its proper divisors (2354243760).

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

998264880 is a wasteful number, since it uses less digits than its factorization.

998264880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1386498 (or 1386489 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 54.

The square root of 998264880 is about 31595.3300346744. The cubic root of 998264880 is about 999.4212918281.

The spelling of 998264880 in words is "nine hundred ninety-eight million, two hundred sixty-four thousand, eight hundred eighty".