158812 has 6 divisors (see below), whose sum is σ = 277928. Its totient is φ = 79404.

The previous prime is 158803. The next prime is 158843. The reversal of 158812 is 218851.

158812 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-4 number, since 4×158812⁴ (a number of 22 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19848 + ... + 19855.

2¹⁵⁸⁸¹² is an apocalyptic number.

It is an amenable number.

158812 is a deficient number, since it is larger than the sum of its proper divisors (119116).

158812 is a wasteful number, since it uses less digits than its factorization.

158812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39707 (or 39705 counting only the distinct ones).

The product of its digits is 640, while the sum is 25.

The square root of 158812 is about 398.5122331874. The cubic root of 158812 is about 54.1536547312.

It can be divided in two parts, 1588 and 12, that added together give a square (1600 = 40²).

The spelling of 158812 in words is "one hundred fifty-eight thousand, eight hundred twelve".