1879720 has 16 divisors (see below), whose sum is σ = 4229460. Its totient is φ = 751872.

The previous prime is 1879663. The next prime is 1879723. The reversal of 1879720 is 279781.

It can be written as a sum of positive squares in 2 ways, for example, as 1643524 + 236196 = 1282^2 + 486^2 .

It is not an unprimeable number, because it can be changed into a prime (1879723) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 23457 + ... + 23536.

2^1879720 is an apocalyptic number.

1879720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1879720 is an abundant number, since it is smaller than the sum of its proper divisors (2349740).

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

1879720 is a wasteful number, since it uses less digits than its factorization.

1879720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47004 (or 47000 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 34.

The square root of 1879720 is about 1371.0288107841. The cubic root of 1879720 is about 123.4139883115.

The spelling of 1879720 in words is "one million, eight hundred seventy-nine thousand, seven hundred twenty".