1298720 has 24 divisors (see below), whose sum is σ = 3068604. Its totient is φ = 519424.

The previous prime is 1298719. The next prime is 1298723. The reversal of 1298720 is 278921.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1263376 + 35344 = 1124^2 + 188^2 .

It is not an unprimeable number, because it can be changed into a prime (1298723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3899 + ... + 4218.

2^1298720 is an apocalyptic number.

1298720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1298720 is an abundant number, since it is smaller than the sum of its proper divisors (1769884).

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

1298720 is an equidigital number, since it uses as much as digits as its factorization.

1298720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8132 (or 8124 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 1298720 is about 1139.6139697283. The cubic root of 1298720 is about 109.1034564692.

The spelling of 1298720 in words is "one million, two hundred ninety-eight thousand, seven hundred twenty".