158947920 has 200 divisors, whose sum is σ = 581555040. Its totient is φ = 40124160.

The previous prime is 158947907. The next prime is 158947969. The reversal of 158947920 is 29749851.

158947920 is a `hidden beast` number, since 1 + 589 + 47 + 9 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

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 39 ways as a sum of consecutive naturals, for example, 122475 + ... + 123765.

Almost surely, 2^158947920 is an apocalyptic number.

158947920 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 158947920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (290777520).

158947920 is an abundant number, since it is smaller than the sum of its proper divisors (422607120).

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

158947920 is a wasteful number, since it uses less digits than its factorization.

158947920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1335 (or 1320 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The square root of 158947920 is about 12607.4549374566. The cubic root of 158947920 is about 541.6909954622.

The spelling of 158947920 in words is "one hundred fifty-eight million, nine hundred forty-seven thousand, nine hundred twenty".