1845480 has 128 divisors (see below), whose sum is σ = 6854400. Its totient is φ = 389376.

The previous prime is 1845463. The next prime is 1845491. The reversal of 1845480 is 845481.

1845480 = T₅₅ + T₅₆ + ... + T₂₂₃.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 141954 + ... + 141966.

It is an arithmetic number, because the mean of its divisors is an integer number (53550).

2^1845480 is an apocalyptic number.

1845480 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 1845480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3427200).

1845480 is an abundant number, since it is smaller than the sum of its proper divisors (5008920).

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

1845480 is a wasteful number, since it uses less digits than its factorization.

1845480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60 (or 30 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 1845480 is about 1358.4844496718. The cubic root of 1845480 is about 122.6600434882.

1845480 divided by its sum of digits (30) gives a palindrome (61516).

Subtracting from 1845480 its reverse (845481), we obtain a palindrome (999999).

The spelling of 1845480 in words is "one million, eight hundred forty-five thousand, four hundred eighty".