1721334 has 16 divisors (see below), whose sum is σ = 3508272. Its totient is φ = 562848.

The previous prime is 1721327. The next prime is 1721339. The reversal of 1721334 is 4331271.

It is a self number, because there is not a number n which added to its sum of digits gives 1721334.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1721339) 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, 2389 + ... + 3024.

It is an arithmetic number, because the mean of its divisors is an integer number (219267).

2^1721334 is an apocalyptic number.

1721334 is an abundant number, since it is smaller than the sum of its proper divisors (1786938).

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

1721334 is a wasteful number, since it uses less digits than its factorization.

1721334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5471.

The product of its digits is 504, while the sum is 21.

The square root of 1721334 is about 1311.9961890189. The cubic root of 1721334 is about 119.8454955997.

The spelling of 1721334 in words is "one million, seven hundred twenty-one thousand, three hundred thirty-four".