158293540 has 24 divisors (see below), whose sum is σ = 332797752. Its totient is φ = 63244800.

The previous prime is 158293507. The next prime is 158293559. The reversal of 158293540 is 45392851.

It can be written as a sum of positive squares in 4 ways, for example, as 107371044 + 50922496 = 10362^2 + 7136^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 158293540.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15490 + ... + 23590.

It is an arithmetic number, because the mean of its divisors is an integer number (13866573).

Almost surely, 2^158293540 is an apocalyptic number.

158293540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

158293540 is an abundant number, since it is smaller than the sum of its proper divisors (174504212).

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

158293540 is a wasteful number, since it uses less digits than its factorization.

158293540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9087 (or 9085 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 37.

The square root of 158293540 is about 12581.4760660266. The cubic root of 158293540 is about 540.9466021282.

The spelling of 158293540 in words is "one hundred fifty-eight million, two hundred ninety-three thousand, five hundred forty".