1836740 has 12 divisors (see below), whose sum is σ = 3857196. Its totient is φ = 734688.

The previous prime is 1836733. The next prime is 1836761. The reversal of 1836740 is 476381.

It can be written as a sum of positive squares in 2 ways, for example, as 541696 + 1295044 = 736^2 + 1138^2 .

It is a super-2 number, since 2×1836740² = 6747227655200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45899 + ... + 45938.

It is an arithmetic number, because the mean of its divisors is an integer number (321433).

2^1836740 is an apocalyptic number.

1836740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1836740 is an abundant number, since it is smaller than the sum of its proper divisors (2020456).

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

1836740 is a wasteful number, since it uses less digits than its factorization.

1836740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91846 (or 91844 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 1836740 is about 1355.2638119569. The cubic root of 1836740 is about 122.4661019631.

The spelling of 1836740 in words is "one million, eight hundred thirty-six thousand, seven hundred forty".