158973012 has 144 divisors (see below), whose sum is σ = 461260800. Its totient is φ = 45722880.

The previous prime is 158973007. The next prime is 158973029. The reversal of 158973012 is 210379851.

158973012 is a `hidden beast` number, since 1 + 589 + 73 + 0 + 1 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1251693 + ... + 1251819.

It is an arithmetic number, because the mean of its divisors is an integer number (3203200).

Almost surely, 2^158973012 is an apocalyptic number.

158973012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 158973012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (230630400).

158973012 is an abundant number, since it is smaller than the sum of its proper divisors (302287788).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

158973012 is a wasteful number, since it uses less digits than its factorization.

158973012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286 (or 281 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 158973012 is about 12608.4500236944. The cubic root of 158973012 is about 541.7194982894.

The spelling of 158973012 in words is "one hundred fifty-eight million, nine hundred seventy-three thousand, twelve".