1385870 has 8 divisors (see below), whose sum is σ = 2494584. Its totient is φ = 554344.

The previous prime is 1385869. The next prime is 1385873. The reversal of 1385870 is 785831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1385873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69284 + ... + 69303.

It is an arithmetic number, because the mean of its divisors is an integer number (311823).

2^1385870 is an apocalyptic number.

1385870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1385870 is a deficient number, since it is larger than the sum of its proper divisors (1108714).

1385870 is a wasteful number, since it uses less digits than its factorization.

1385870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138594.

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 1385870 is about 1177.2297991471. The cubic root of 1385870 is about 111.4912619588.

The spelling of 1385870 in words is "one million, three hundred eighty-five thousand, eight hundred seventy".