1298988 has 18 divisors (see below), whose sum is σ = 3283644. Its totient is φ = 432984.

The previous prime is 1298981. The next prime is 1298989. The reversal of 1298988 is 8898921.

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (1298981) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18006 + ... + 18077.

2^1298988 is an apocalyptic number.

1298988 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1298988 is an abundant number, since it is smaller than the sum of its proper divisors (1984656).

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

1298988 is a wasteful number, since it uses less digits than its factorization.

1298988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36093 (or 36088 counting only the distinct ones).

The product of its digits is 82944, while the sum is 45.

The square root of 1298988 is about 1139.7315473391. The cubic root of 1298988 is about 109.1109607081.

The spelling of 1298988 in words is "one million, two hundred ninety-eight thousand, nine hundred eighty-eight".