1792721 has 8 divisors (see below), whose sum is σ = 2092800. Its totient is φ = 1503648.

The previous prime is 1792711. The next prime is 1792753. The reversal of 1792721 is 1272971.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1792721 - 2¹⁰ = 1791697 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a nialpdrome in base 8.

It is not an unprimeable number, because it can be changed into a prime (1792711) 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, 2396 + ... + 3053.

It is an arithmetic number, because the mean of its divisors is an integer number (261600).

2^1792721 is an apocalyptic number.

It is an amenable number.

1792721 is a deficient number, since it is larger than the sum of its proper divisors (300079).

1792721 is an equidigital number, since it uses as much as digits as its factorization.

1792721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5503.

The product of its digits is 1764, while the sum is 29.

The square root of 1792721 is about 1338.9253153182. The cubic root of 1792721 is about 121.4798467254.

The spelling of 1792721 in words is "one million, seven hundred ninety-two thousand, seven hundred twenty-one".