158428730 has 8 divisors (see below), whose sum is σ = 285171732. Its totient is φ = 63371488.

The previous prime is 158428723. The next prime is 158428741. The reversal of 158428730 is 37824851.

It can be written as a sum of positive squares in 2 ways, for example, as 150970369 + 7458361 = 12287^2 + 2731^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7921427 + ... + 7921446.

Almost surely, 2^158428730 is an apocalyptic number.

158428730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

158428730 is a deficient number, since it is larger than the sum of its proper divisors (126743002).

158428730 is a wasteful number, since it uses less digits than its factorization.

158428730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15842880.

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 158428730 is about 12586.8475004665. The cubic root of 158428730 is about 541.1005561094.

The spelling of 158428730 in words is "one hundred fifty-eight million, four hundred twenty-eight thousand, seven hundred thirty".