1855040 has 112 divisors (see below), whose sum is σ = 5266944. Its totient is φ = 614400.

The previous prime is 1855039. The next prime is 1855093. The reversal of 1855040 is 405581.

It is a junction number, because it is equal to n+sod(n) for n = 1854997 and 1855015.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59825 + ... + 59855.

2^1855040 is an apocalyptic number.

1855040 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 1855040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2633472).

1855040 is an abundant number, since it is smaller than the sum of its proper divisors (3411904).

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

1855040 is a wasteful number, since it uses less digits than its factorization.

1855040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76 (or 66 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 1855040 is about 1361.9985315704. The cubic root of 1855040 is about 122.8714809813.

It can be divided in two parts, 185 and 5040, that added together give a palindrome (5225).

The spelling of 1855040 in words is "one million, eight hundred fifty-five thousand, forty".