158397120 has 392 divisors, whose sum is σ = 652966944. Its totient is φ = 35831808.

The previous prime is 158397119. The next prime is 158397131. The reversal of 158397120 is 21793851.

158397120 is a `hidden beast` number, since 1 + 583 + 9 + 71 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 1632912 + ... + 1633008.

It is an arithmetic number, because the mean of its divisors is an integer number (1665732).

Almost surely, 2^158397120 is an apocalyptic number.

158397120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 158397120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (326483472).

158397120 is an abundant number, since it is smaller than the sum of its proper divisors (494569824).

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

158397120 is an frugal number, since it uses more digits than its factorization.

158397120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139 (or 114 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 158397120 is about 12585.5917620110. The cubic root of 158397120 is about 541.0645665801.

The spelling of 158397120 in words is "one hundred fifty-eight million, three hundred ninety-seven thousand, one hundred twenty".