1812480 has 96 divisors (see below), whose sum is σ = 5896800. Its totient is φ = 475136.

The previous prime is 1812457. The next prime is 1812509. The reversal of 1812480 is 842181.

It is a tau number, because it is divible by the number of its divisors (96).

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

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1812480.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30691 + ... + 30749.

It is an arithmetic number, because the mean of its divisors is an integer number (61425).

2^1812480 is an apocalyptic number.

1812480 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 1812480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2948400).

1812480 is an abundant number, since it is smaller than the sum of its proper divisors (4084320).

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

1812480 is an equidigital number, since it uses as much as digits as its factorization.

1812480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89 (or 69 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 24.

The square root of 1812480 is about 1346.2837739496. The cubic root of 1812480 is about 121.9245255655.

Subtracting from 1812480 its reverse (842181), we obtain a cube (970299 = 99³).

The spelling of 1812480 in words is "one million, eight hundred twelve thousand, four hundred eighty".