1816080 has 160 divisors (see below), whose sum is σ = 6856704. Its totient is φ = 388608.

The previous prime is 1816069. The next prime is 1816091. The reversal of 1816080 is 806181.

It is an interprime number because it is at equal distance from previous prime (1816069) and next prime (1816091).

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 1816080.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38617 + ... + 38663.

2^1816080 is an apocalyptic number.

1816080 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 1816080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3428352).

1816080 is an abundant number, since it is smaller than the sum of its proper divisors (5040624).

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

1816080 is a wasteful number, since it uses less digits than its factorization.

1816080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93 (or 87 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 24.

The square root of 1816080 is about 1347.6201245158. The cubic root of 1816080 is about 122.0051955147.

The spelling of 1816080 in words is "one million, eight hundred sixteen thousand, eighty".