72823158 has 16 divisors (see below), whose sum is σ = 161829360. Its totient is φ = 24274368.

The previous prime is 72823151. The next prime is 72823183. The reversal of 72823158 is 85132827.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72823151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 674235 + ... + 674342.

It is an arithmetic number, because the mean of its divisors is an integer number (10114335).

Almost surely, 2^72823158 is an apocalyptic number.

72823158 is an abundant number, since it is smaller than the sum of its proper divisors (89006202).

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

72823158 is a wasteful number, since it uses less digits than its factorization.

72823158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1348588 (or 1348582 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 72823158 is about 8533.6485749063. The cubic root of 72823158 is about 417.5961660700.

It can be divided in two parts, 7282 and 3158, that added together give a triangular number (10440 = T₁₄₄).

The spelling of 72823158 in words is "seventy-two million, eight hundred twenty-three thousand, one hundred fifty-eight".