1830372 has 12 divisors (see below), whose sum is σ = 4270896. Its totient is φ = 610120.

The previous prime is 1830349. The next prime is 1830379. The reversal of 1830372 is 2730381.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1830379) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76254 + ... + 76277.

It is an arithmetic number, because the mean of its divisors is an integer number (355908).

2^1830372 is an apocalyptic number.

1830372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1830372 is an abundant number, since it is smaller than the sum of its proper divisors (2440524).

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

1830372 is a wasteful number, since it uses less digits than its factorization.

1830372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152538 (or 152536 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 1830372 is about 1352.9124140165. The cubic root of 1830372 is about 122.3244075946.

Subtracting 1830372 from its reverse (2730381), we obtain a palindrome (900009).

The spelling of 1830372 in words is "one million, eight hundred thirty thousand, three hundred seventy-two".