1845740 has 48 divisors (see below), whose sum is σ = 4327680. Its totient is φ = 656640.

The previous prime is 1845731. The next prime is 1845751. The reversal of 1845740 is 475481.

1845740 = 195² + 196² + ... + 234².

It is a super-2 number, since 2×1845740² = 6813512295200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7946 + ... + 8174.

It is an arithmetic number, because the mean of its divisors is an integer number (90160).

2^1845740 is an apocalyptic number.

1845740 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 1845740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2163840).

1845740 is an abundant number, since it is smaller than the sum of its proper divisors (2481940).

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

1845740 is a wasteful number, since it uses less digits than its factorization.

1845740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282 (or 280 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 1845740 is about 1358.5801411768. The cubic root of 1845740 is about 122.6658035278.

The spelling of 1845740 in words is "one million, eight hundred forty-five thousand, seven hundred forty".