1730420 has 24 divisors (see below), whose sum is σ = 3752448. Its totient is φ = 669600.

The previous prime is 1730371. The next prime is 1730429. The reversal of 1730420 is 240371.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1730429) 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, 776 + ... + 2015.

It is an arithmetic number, because the mean of its divisors is an integer number (156352).

2^1730420 is an apocalyptic number.

1730420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1730420 is an abundant number, since it is smaller than the sum of its proper divisors (2022028).

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

1730420 is a wasteful number, since it uses less digits than its factorization.

1730420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2831 (or 2829 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 1730420 is about 1315.4542941509. The cubic root of 1730420 is about 120.0559923882.

Adding to 1730420 its reverse (240371), we get a palindrome (1970791).

The spelling of 1730420 in words is "one million, seven hundred thirty thousand, four hundred twenty".