1840080 has 160 divisors (see below), whose sum is σ = 6749568. Its totient is φ = 409600.

The previous prime is 1840073. The next prime is 1840087. The reversal of 1840080 is 800481.

It is an interprime number because it is at equal distance from previous prime (1840073) and next prime (1840087).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1840087) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44860 + ... + 44900.

2^1840080 is an apocalyptic number.

1840080 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 1840080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3374784).

1840080 is an abundant number, since it is smaller than the sum of its proper divisors (4909488).

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

1840080 is a wasteful number, since it uses less digits than its factorization.

1840080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85 (or 79 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

The square root of 1840080 is about 1356.4954846958. The cubic root of 1840080 is about 122.5402893993.

The spelling of 1840080 in words is "one million, eight hundred forty thousand, eighty".