1845040 has 20 divisors (see below), whose sum is σ = 4289904. Its totient is φ = 737984.

The previous prime is 1845029. The next prime is 1845047. The reversal of 1845040 is 405481.

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (1845047) 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, 11452 + ... + 11611.

2^1845040 is an apocalyptic number.

1845040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1845040 is an abundant number, since it is smaller than the sum of its proper divisors (2444864).

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

1845040 is a wasteful number, since it uses less digits than its factorization.

1845040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23076 (or 23070 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 1845040 is about 1358.3224948443. The cubic root of 1845040 is about 122.6502944963.

The spelling of 1845040 in words is "one million, eight hundred forty-five thousand, forty".