1298540 has 12 divisors (see below), whose sum is σ = 2726976. Its totient is φ = 519408.

The previous prime is 1298537. The next prime is 1298551. The reversal of 1298540 is 458921.

It is a super-2 number, since 2×1298540² = 3372412263200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32444 + ... + 32483.

It is an arithmetic number, because the mean of its divisors is an integer number (227248).

2^1298540 is an apocalyptic number.

1298540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1298540 is an abundant number, since it is smaller than the sum of its proper divisors (1428436).

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

1298540 is a wasteful number, since it uses less digits than its factorization.

1298540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64936 (or 64934 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 1298540 is about 1139.5349928809. The cubic root of 1298540 is about 109.0984157292.

The spelling of 1298540 in words is "one million, two hundred ninety-eight thousand, five hundred forty".