158940340 has 48 divisors (see below), whose sum is σ = 360455760. Its totient is φ = 58521600.

The previous prime is 158940289. The next prime is 158940359. The reversal of 158940340 is 43049851.

It can be written as a sum of positive squares in 8 ways, for example, as 32512804 + 126427536 = 5702^2 + 11244^2 .

It is a junction number, because it is equal to n+sod(n) for n = 158940296 and 158940305.

It is a congruent number.

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, 131740 + ... + 132940.

It is an arithmetic number, because the mean of its divisors is an integer number (7509495).

Almost surely, 2^158940340 is an apocalyptic number.

158940340 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 158940340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180227880).

158940340 is an abundant number, since it is smaller than the sum of its proper divisors (201515420).

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

158940340 is a wasteful number, since it uses less digits than its factorization.

158940340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1732 (or 1730 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 158940340 is about 12607.1543180846. The cubic root of 158940340 is about 541.6823845012.

The spelling of 158940340 in words is "one hundred fifty-eight million, nine hundred forty thousand, three hundred forty".