1879840 has 48 divisors (see below), whose sum is σ = 4596480. Its totient is φ = 725760.

The previous prime is 1879817. The next prime is 1879847. The reversal of 1879840 is 489781.

It is a self number, because there is not a number n which added to its sum of digits gives 1879840.

It is not an unprimeable number, because it can be changed into a prime (1879847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4771 + ... + 5149.

It is an arithmetic number, because the mean of its divisors is an integer number (95760).

2^1879840 is an apocalyptic number.

1879840 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 1879840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2298240).

1879840 is an abundant number, since it is smaller than the sum of its proper divisors (2716640).

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

1879840 is a wasteful number, since it uses less digits than its factorization.

1879840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425 (or 417 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 1879840 is about 1371.0725728422. The cubic root of 1879840 is about 123.4166144763.

The spelling of 1879840 in words is "one million, eight hundred seventy-nine thousand, eight hundred forty".