153812 has 6 divisors (see below), whose sum is σ = 269178. Its totient is φ = 76904.

The previous prime is 153763. The next prime is 153817. The reversal of 153812 is 218351.

It can be written as a sum of positive squares in only one way, i.e., 132496 + 21316 = 364^2 + 146^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (153817) by changing a digit.

153812 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, 19223 + ... + 19230.

It is an arithmetic number, because the mean of its divisors is an integer number (44863).

2¹⁵³⁸¹² is an apocalyptic number.

It is an amenable number.

153812 is a deficient number, since it is larger than the sum of its proper divisors (115366).

153812 is a wasteful number, since it uses less digits than its factorization.

153812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38457 (or 38455 counting only the distinct ones).

The product of its digits is 240, while the sum is 20.

The square root of 153812 is about 392.1887300778. The cubic root of 153812 is about 53.5792635313.

The spelling of 153812 in words is "one hundred fifty-three thousand, eight hundred twelve".