1304172 has 36 divisors (see below), whose sum is σ = 3492216. Its totient is φ = 408960.

The previous prime is 1304167. The next prime is 1304183. The reversal of 1304172 is 2714031.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 454 + ... + 1677.

It is an arithmetic number, because the mean of its divisors is an integer number (97006).

2^1304172 is an apocalyptic number.

1304172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1304172 is an abundant number, since it is smaller than the sum of its proper divisors (2188044).

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

1304172 is a wasteful number, since it uses less digits than its factorization.

1304172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2158 (or 2153 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 1304172 is about 1142.0035026216. The cubic root of 1304172 is about 109.2559146887.

The spelling of 1304172 in words is "one million, three hundred four thousand, one hundred seventy-two".