158216 has 8 divisors (see below), whose sum is σ = 296670. Its totient is φ = 79104.

The previous prime is 158209. The next prime is 158227. The reversal of 158216 is 612851.

It can be written as a sum of positive squares in only one way, i.e., 136900 + 21316 = 370^2 + 146^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 158191 and 158200.

It is a congruent number.

It is an unprimeable number.

158216 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9881 + ... + 9896.

2¹⁵⁸²¹⁶ is an apocalyptic number.

It is an amenable number.

158216 is a deficient number, since it is larger than the sum of its proper divisors (138454).

158216 is a wasteful number, since it uses less digits than its factorization.

158216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19783 (or 19779 counting only the distinct ones).

The product of its digits is 480, while the sum is 23.

The square root of 158216 is about 397.7637489767. The cubic root of 158216 is about 54.0858260241.

The spelling of 158216 in words is "one hundred fifty-eight thousand, two hundred sixteen".