1298598 has 32 divisors (see below), whose sum is σ = 3033600. Its totient is φ = 370440.

The previous prime is 1298581. The next prime is 1298611. The reversal of 1298598 is 8958921.

It is a happy number.

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 15 ways as a sum of consecutive naturals, for example, 1743 + ... + 2373.

It is an arithmetic number, because the mean of its divisors is an integer number (94800).

2^1298598 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1298598, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1516800).

1298598 is an abundant number, since it is smaller than the sum of its proper divisors (1735002).

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

1298598 is an equidigital number, since it uses as much as digits as its factorization.

1298598 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657 (or 643 counting only the distinct ones).

The product of its digits is 51840, while the sum is 42.

The square root of 1298598 is about 1139.5604415739. The cubic root of 1298598 is about 109.1000400185.

The spelling of 1298598 in words is "one million, two hundred ninety-eight thousand, five hundred ninety-eight".