1838040 has 96 divisors (see below), whose sum is σ = 5968080. Its totient is φ = 452608.

The previous prime is 1838033. The next prime is 1838047. The reversal of 1838040 is 408381.

1838040 = T₁₈₉ + T₁₉₀ + ... + T₂₆₀.

It is an interprime number because it is at equal distance from previous prime (1838033) and next prime (1838047).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1838040.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1838047) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34654 + ... + 34706.

2^1838040 is an apocalyptic number.

1838040 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 1838040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2984040).

1838040 is an abundant number, since it is smaller than the sum of its proper divisors (4130040).

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

1838040 is a wasteful number, since it uses less digits than its factorization.

1838040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101 (or 80 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 1838040 is about 1355.7433385416. The cubic root of 1838040 is about 122.4949879943.

The spelling of 1838040 in words is "one million, eight hundred thirty-eight thousand, forty".