158973804 has 72 divisors (see below), whose sum is σ = 441347088. Its totient is φ = 47848320.

The previous prime is 158973791. The next prime is 158973809. The reversal of 158973804 is 408379851.

It is a self number, because there is not a number n which added to its sum of digits gives 158973804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158973809) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 60894 + ... + 63450.

Almost surely, 2^158973804 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 158973804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (220673544).

158973804 is an abundant number, since it is smaller than the sum of its proper divisors (282373284).

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

158973804 is a wasteful number, since it uses less digits than its factorization.

158973804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2735 (or 2730 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 158973804 is about 12608.4814311637. The cubic root of 158973804 is about 541.7203978993.

It can be divided in two parts, 15897 and 3804, that added together give a triangular number (19701 = T₁₉₈).

The spelling of 158973804 in words is "one hundred fifty-eight million, nine hundred seventy-three thousand, eight hundred four".