1797320 has 64 divisors (see below), whose sum is σ = 4752000. Its totient is φ = 611520.

The previous prime is 1797319. The next prime is 1797331. The reversal of 1797320 is 237971.

It is a happy number.

It is an Ulam number.

It is a nialpdrome in base 8.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13655 + ... + 13785.

It is an arithmetic number, because the mean of its divisors is an integer number (74250).

2^1797320 is an apocalyptic number.

1797320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1797320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2376000).

1797320 is an abundant number, since it is smaller than the sum of its proper divisors (2954680).

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

1797320 is a wasteful number, since it uses less digits than its factorization.

1797320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163 (or 145 counting only the distinct ones).

The product of its (nonzero) digits is 2646, while the sum is 29.

The square root of 1797320 is about 1340.6416374259. The cubic root of 1797320 is about 121.5836384380.

The spelling of 1797320 in words is "one million, seven hundred ninety-seven thousand, three hundred twenty".