158397722 has 8 divisors (see below), whose sum is σ = 271538976. Its totient is φ = 67884732.

The previous prime is 158397709. The next prime is 158397727. The reversal of 158397722 is 227793851.

158397722 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not an unprimeable number, because it can be changed into a prime (158397727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5657048 + ... + 5657075.

It is an arithmetic number, because the mean of its divisors is an integer number (33942372).

Almost surely, 2^158397722 is an apocalyptic number.

158397722 is a deficient number, since it is larger than the sum of its proper divisors (113141254).

158397722 is a wasteful number, since it uses less digits than its factorization.

158397722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11314132.

The product of its digits is 211680, while the sum is 44.

The square root of 158397722 is about 12585.6156782257. The cubic root of 158397722 is about 541.0652520312.

The spelling of 158397722 in words is "one hundred fifty-eight million, three hundred ninety-seven thousand, seven hundred twenty-two".