1298730 has 16 divisors (see below), whose sum is σ = 3117024. Its totient is φ = 346320.

The previous prime is 1298723. The next prime is 1298747. The reversal of 1298730 is 378921.

It is a happy number.

It is a super-2 number, since 2×1298730² = 3373399225800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 43291 = 1298730 / (1 + 2 + 9 + 8 + 7 + 3 + 0).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21616 + ... + 21675.

It is an arithmetic number, because the mean of its divisors is an integer number (194814).

2^1298730 is an apocalyptic number.

1298730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1298730 is an abundant number, since it is smaller than the sum of its proper divisors (1818294).

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

1298730 is a wasteful number, since it uses less digits than its factorization.

1298730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43301.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 1298730 is about 1139.6183571705. The cubic root of 1298730 is about 109.1037364967.

The spelling of 1298730 in words is "one million, two hundred ninety-eight thousand, seven hundred thirty".