1298040 has 64 divisors (see below), whose sum is σ = 4039200. Its totient is φ = 333312.

The previous prime is 1298039. The next prime is 1298047. The reversal of 1298040 is 408921.

It is a super-3 number, since 3×1298040³ = 6561233324131392000, which contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1298040.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1298047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3294 + ... + 3666.

2^1298040 is an apocalyptic number.

1298040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1298040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2019600).

1298040 is an abundant number, since it is smaller than the sum of its proper divisors (2741160).

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

1298040 is a wasteful number, since it uses less digits than its factorization.

1298040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416 (or 412 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 1298040 is about 1139.3155840240. The cubic root of 1298040 is about 109.0844112291.

The spelling of 1298040 in words is "one million, two hundred ninety-eight thousand, forty".