215894 has 12 divisors (see below), whose sum is σ = 376884. Its totient is φ = 92484.

The previous prime is 215893. The next prime is 215899. The reversal of 215894 is 498512.

215894 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×215894² = 93220438472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215893) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1004 + ... + 1199.

It is an arithmetic number, because the mean of its divisors is an integer number (31407).

2²¹⁵⁸⁹⁴ is an apocalyptic number.

215894 is a deficient number, since it is larger than the sum of its proper divisors (160990).

215894 is a wasteful number, since it uses less digits than its factorization.

215894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2219 (or 2212 counting only the distinct ones).

The product of its digits is 2880, while the sum is 29.

The square root of 215894 is about 464.6439497077. The cubic root of 215894 is about 59.9901835792.

The spelling of 215894 in words is "two hundred fifteen thousand, eight hundred ninety-four".