998418120 has 256 divisors, whose sum is σ = 3538944000. Its totient is φ = 225227520.

The previous prime is 998418103. The next prime is 998418149. The reversal of 998418120 is 21814899.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5227225 + ... + 5227415.

It is an arithmetic number, because the mean of its divisors is an integer number (13824000).

Almost surely, 2^998418120 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 998418120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1769472000).

998418120 is an abundant number, since it is smaller than the sum of its proper divisors (2540525880).

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

998418120 is a wasteful number, since it uses less digits than its factorization.

998418120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353 (or 335 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 42.

The square root of 998418120 is about 31597.7549835427. The cubic root of 998418120 is about 999.4724283838.

The spelling of 998418120 in words is "nine hundred ninety-eight million, four hundred eighteen thousand, one hundred twenty".