1839240 has 128 divisors (see below), whose sum is σ = 6652800. Its totient is φ = 449280.

The previous prime is 1839221. The next prime is 1839283. The reversal of 1839240 is 429381.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13975 + ... + 14105.

It is an arithmetic number, because the mean of its divisors is an integer number (51975).

2^1839240 is an apocalyptic number.

1839240 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 1839240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3326400).

1839240 is an abundant number, since it is smaller than the sum of its proper divisors (4813560).

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

1839240 is a wasteful number, since it uses less digits than its factorization.

1839240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164 (or 154 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 1839240 is about 1356.1858279749. The cubic root of 1839240 is about 122.5216399366.

The spelling of 1839240 in words is "one million, eight hundred thirty-nine thousand, two hundred forty".