1868730 has 32 divisors (see below), whose sum is σ = 4523904. Its totient is φ = 494016.

The previous prime is 1868723. The next prime is 1868747. The reversal of 1868730 is 378681.

It is a junction number, because it is equal to n+sod(n) for n = 1868691 and 1868700.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 4824 + ... + 5196.

It is an arithmetic number, because the mean of its divisors is an integer number (141372).

2^1868730 is an apocalyptic number.

1868730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1868730 is an abundant number, since it is smaller than the sum of its proper divisors (2655174).

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

1868730 is a wasteful number, since it uses less digits than its factorization.

1868730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 1868730 is about 1367.0149962601. The cubic root of 1868730 is about 123.1730000005.

The spelling of 1868730 in words is "one million, eight hundred sixty-eight thousand, seven hundred thirty".