1730872 has 64 divisors (see below), whose sum is σ = 4082400. Its totient is φ = 675840.

The previous prime is 1730867. The next prime is 1730873. The reversal of 1730872 is 2780371.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1730872.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1730873) 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, 19404 + ... + 19492.

2^1730872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1730872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2041200).

1730872 is an abundant number, since it is smaller than the sum of its proper divisors (2351528).

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

1730872 is a wasteful number, since it uses less digits than its factorization.

1730872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136 (or 132 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 1730872 is about 1315.6260866979. The cubic root of 1730872 is about 120.0664446839.

The spelling of 1730872 in words is "one million, seven hundred thirty thousand, eight hundred seventy-two".