158231502 has 128 divisors (see below), whose sum is σ = 427069440. Its totient is φ = 42768000.

The previous prime is 158231483. The next prime is 158231531. The reversal of 158231502 is 205132851.

It is a happy number.

158231502 is a `hidden beast` number, since 1 + 582 + 31 + 50 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 239052 + ... + 239712.

It is an arithmetic number, because the mean of its divisors is an integer number (3336480).

Almost surely, 2^158231502 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 158231502, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (213534720).

158231502 is an abundant number, since it is smaller than the sum of its proper divisors (268837938).

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

158231502 is a wasteful number, since it uses less digits than its factorization.

158231502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 727 (or 721 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 158231502 is about 12579.0103744293. The cubic root of 158231502 is about 540.8759240904.

The spelling of 158231502 in words is "one hundred fifty-eight million, two hundred thirty-one thousand, five hundred two".