158722320 has 40 divisors (see below), whose sum is σ = 492039936. Its totient is φ = 42325888.

The previous prime is 158722313. The next prime is 158722327. The reversal of 158722320 is 23227851.

158722320 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (158722313) and next prime (158722327).

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (158722327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 330432 + ... + 330911.

Almost surely, 2^158722320 is an apocalyptic number.

158722320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

158722320 is an abundant number, since it is smaller than the sum of its proper divisors (333317616).

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

158722320 is a wasteful number, since it uses less digits than its factorization.

158722320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661359 (or 661353 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 158722320 is about 12598.5046731745. The cubic root of 158722320 is about 541.4345941810.

The spelling of 158722320 in words is "one hundred fifty-eight million, seven hundred twenty-two thousand, three hundred twenty".