1853040 has 80 divisors (see below), whose sum is σ = 6571008. Its totient is φ = 423168.

The previous prime is 1853011. The next prime is 1853053. The reversal of 1853040 is 403581.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a nialpdrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 1852998 and 1853016.

It is a congruent number.

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, 1129 + ... + 2231.

2^1853040 is an apocalyptic number.

1853040 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 1853040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3285504).

1853040 is an abundant number, since it is smaller than the sum of its proper divisors (4717968).

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

1853040 is a wasteful number, since it uses less digits than its factorization.

1853040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1126 (or 1120 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 1853040 is about 1361.2641183841. The cubic root of 1853040 is about 122.8273073911.

The spelling of 1853040 in words is "one million, eight hundred fifty-three thousand, forty".