1724145 has 16 divisors (see below), whose sum is σ = 2782080. Its totient is φ = 911744.

The previous prime is 1724131. The next prime is 1724147. The reversal of 1724145 is 5414271.

It is a cyclic number.

It is not a de Polignac number, because 1724145 - 2⁵ = 1724113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1724147) 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, 1636 + ... + 2474.

It is an arithmetic number, because the mean of its divisors is an integer number (173880).

2^1724145 is an apocalyptic number.

1724145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1724145 is a deficient number, since it is larger than the sum of its proper divisors (1057935).

1724145 is a wasteful number, since it uses less digits than its factorization.

1724145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 984.

The product of its digits is 1120, while the sum is 24.

The square root of 1724145 is about 1313.0670203763. The cubic root of 1724145 is about 119.9106974475.

The spelling of 1724145 in words is "one million, seven hundred twenty-four thousand, one hundred forty-five".