1298172 has 24 divisors (see below), whose sum is σ = 3048192. Its totient is φ = 430000.

The previous prime is 1298161. The next prime is 1298173. The reversal of 1298172 is 2718921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1298173) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2797 + ... + 3227.

It is an arithmetic number, because the mean of its divisors is an integer number (127008).

2^1298172 is an apocalyptic number.

1298172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1298172 is an abundant number, since it is smaller than the sum of its proper divisors (1750020).

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

1298172 is a wasteful number, since it uses less digits than its factorization.

1298172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 689 (or 687 counting only the distinct ones).

The product of its digits is 2016, while the sum is 30.

The square root of 1298172 is about 1139.3735120670. The cubic root of 1298172 is about 109.0881087665.

The spelling of 1298172 in words is "one million, two hundred ninety-eight thousand, one hundred seventy-two".