1936840 has 32 divisors (see below), whose sum is σ = 4467960. Its totient is φ = 755200.

The previous prime is 1936819. The next prime is 1936859. The reversal of 1936840 is 486391.

It can be written as a sum of positive squares in 4 ways, for example, as 1493284 + 443556 = 1222^2 + 666^2 .

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 7 ways as a sum of consecutive naturals, for example, 1050 + ... + 2230.

2^1936840 is an apocalyptic number.

1936840 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 1936840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2233980).

1936840 is an abundant number, since it is smaller than the sum of its proper divisors (2531120).

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

1936840 is a wasteful number, since it uses less digits than its factorization.

1936840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1233 (or 1229 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 1936840 is about 1391.7039915154. The cubic root of 1936840 is about 124.6516166008.

The spelling of 1936840 in words is "one million, nine hundred thirty-six thousand, eight hundred forty".