1822730 has 32 divisors (see below), whose sum is σ = 4040064. Its totient is φ = 576576.

The previous prime is 1822703. The next prime is 1822781. The reversal of 1822730 is 372281.

It is a Smith number, since the sum of its digits (23) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 1822696 and 1822705.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92 + ... + 1911.

It is an arithmetic number, because the mean of its divisors is an integer number (126252).

2^1822730 is an apocalyptic number.

1822730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1822730 is an abundant number, since it is smaller than the sum of its proper divisors (2217334).

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

1822730 is a wasteful number, since it uses less digits than its factorization.

1822730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2030.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 1822730 is about 1350.0851824978. The cubic root of 1822730 is about 122.1539309343.

It can be divided in two parts, 1822 and 730, that added together give a palindrome (2552).

The spelling of 1822730 in words is "one million, eight hundred twenty-two thousand, seven hundred thirty".