1386870 has 16 divisors (see below), whose sum is σ = 3328560. Its totient is φ = 369824.

The previous prime is 1386863. The next prime is 1386881. The reversal of 1386870 is 786831.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 7 ways as a sum of consecutive naturals, for example, 23085 + ... + 23144.

It is an arithmetic number, because the mean of its divisors is an integer number (208035).

2^1386870 is an apocalyptic number.

1386870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1386870 is an abundant number, since it is smaller than the sum of its proper divisors (1941690).

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

1386870 is a wasteful number, since it uses less digits than its factorization.

1386870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46239.

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

The square root of 1386870 is about 1177.6544484695. The cubic root of 1386870 is about 111.5180717020.

The spelling of 1386870 in words is "one million, three hundred eighty-six thousand, eight hundred seventy".