856730 has 16 divisors (see below), whose sum is σ = 1762560. Its totient is φ = 293712.

The previous prime is 856721. The next prime is 856733. The reversal of 856730 is 37658.

It is a junction number, because it is equal to n+sod(n) for n = 856693 and 856702.

It is not an unprimeable number, because it can be changed into a prime (856733) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6050 + ... + 6189.

It is an arithmetic number, because the mean of its divisors is an integer number (110160).

2⁸⁵⁶⁷³⁰ is an apocalyptic number.

856730 is an abundant number, since it is smaller than the sum of its proper divisors (905830).

It is a weird number, because it is abundant, but not a pseudoperfect number.

856730 is a wasteful number, since it uses less digits than its factorization.

856730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12253.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 856730 is about 925.5971045763. The cubic root of 856730 is about 94.9761713089.

The spelling of 856730 in words is "eight hundred fifty-six thousand, seven hundred thirty".