158660840 has 64 divisors (see below), whose sum is σ = 385862400. Its totient is φ = 58367232.

The previous prime is 158660839. The next prime is 158660851. The reversal of 158660840 is 48066851.

158660840 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 158660794 and 158660803.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 240431 + ... + 241089.

It is an arithmetic number, because the mean of its divisors is an integer number (6029100).

Almost surely, 2^158660840 is an apocalyptic number.

158660840 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 158660840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (192931200).

158660840 is an abundant number, since it is smaller than the sum of its proper divisors (227201560).

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

158660840 is a wasteful number, since it uses less digits than its factorization.

158660840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1146 (or 1142 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 158660840 is about 12596.0644647445. The cubic root of 158660840 is about 541.3646781632.

It can be divided in two parts, 1586 and 60840, that added together give a palindrome (62426).

The spelling of 158660840 in words is "one hundred fifty-eight million, six hundred sixty thousand, eight hundred forty".