158897970 has 128 divisors (see below), whose sum is σ = 528353280. Its totient is φ = 33013440.

The previous prime is 158897951. The next prime is 158898013. The reversal of 158897970 is 79798851.

158897970 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 16969 + ... + 24611.

It is an arithmetic number, because the mean of its divisors is an integer number (4127760).

Almost surely, 2^158897970 is an apocalyptic number.

158897970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 158897970, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (264176640).

158897970 is an abundant number, since it is smaller than the sum of its proper divisors (369455310).

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

158897970 is a wasteful number, since it uses less digits than its factorization.

158897970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7677 (or 7671 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 54.

The square root of 158897970 is about 12605.4738110077. The cubic root of 158897970 is about 541.6342466855.

The spelling of 158897970 in words is "one hundred fifty-eight million, eight hundred ninety-seven thousand, nine hundred seventy".