1816480 has 24 divisors (see below), whose sum is σ = 4291812. Its totient is φ = 726528.

The previous prime is 1816453. The next prime is 1816489. The reversal of 1816480 is 846181.

It can be written as a sum of positive squares in 2 ways, for example, as 1752976 + 63504 = 1324^2 + 252^2 .

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1816489) 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, 5517 + ... + 5836.

2^1816480 is an apocalyptic number.

1816480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1816480 is an abundant number, since it is smaller than the sum of its proper divisors (2475332).

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

1816480 is a wasteful number, since it uses less digits than its factorization.

1816480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11368 (or 11360 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 1816480 is about 1347.7685261201. The cubic root of 1816480 is about 122.0141522595.

Subtracting from 1816480 its reverse (846181), we obtain a cube (970299 = 99³).

The spelling of 1816480 in words is "one million, eight hundred sixteen thousand, four hundred eighty".