1298340 has 36 divisors (see below), whose sum is σ = 3938844. Its totient is φ = 346176.

The previous prime is 1298333. The next prime is 1298351. The reversal of 1298340 is 438921.

It can be written as a sum of positive squares in 2 ways, for example, as 788544 + 509796 = 888^2 + 714^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3427 + ... + 3786.

2^1298340 is an apocalyptic number.

1298340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1298340 is an abundant number, since it is smaller than the sum of its proper divisors (2640504).

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

1298340 is a wasteful number, since it uses less digits than its factorization.

1298340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7228 (or 7223 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 1298340 is about 1139.4472344080. The cubic root of 1298340 is about 109.0928143607.

The spelling of 1298340 in words is "one million, two hundred ninety-eight thousand, three hundred forty".