215830 has 16 divisors (see below), whose sum is σ = 393984. Its totient is φ = 85120.

The previous prime is 215827. The next prime is 215833. The reversal of 215830 is 38512.

It is a happy number.

215830 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (215827) and next prime (215833).

It is a junction number, because it is equal to n+sod(n) for n = 215798 and 215807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215833) 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, 1035 + ... + 1225.

It is an arithmetic number, because the mean of its divisors is an integer number (24624).

2²¹⁵⁸³⁰ is an apocalyptic number.

215830 is a deficient number, since it is larger than the sum of its proper divisors (178154).

215830 is a wasteful number, since it uses less digits than its factorization.

215830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 215830 is about 464.5750746650. The cubic root of 215830 is about 59.9842551279.

The spelling of 215830 in words is "two hundred fifteen thousand, eight hundred thirty".