1879740 has 72 divisors (see below), whose sum is σ = 5948880. Its totient is φ = 492768.

The previous prime is 1879729. The next prime is 1879781. The reversal of 1879740 is 479781.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1879695 and 1879704.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31831 + ... + 31889.

2^1879740 is an apocalyptic number.

1879740 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 1879740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2974440).

1879740 is an abundant number, since it is smaller than the sum of its proper divisors (4069140).

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

1879740 is a wasteful number, since it uses less digits than its factorization.

1879740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136 (or 69 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 1879740 is about 1371.0361045574. The cubic root of 1879740 is about 123.4144260134.

The spelling of 1879740 in words is "one million, eight hundred seventy-nine thousand, seven hundred forty".