158378240 has 36 divisors (see below), whose sum is σ = 379368444. Its totient is φ = 63350784.

The previous prime is 158378237. The next prime is 158378263. The reversal of 158378240 is 42873851.

It can be written as a sum of positive squares in 2 ways, for example, as 94633984 + 63744256 = 9728^2 + 7984^2 .

It is a junction number, because it is equal to n+sod(n) for n = 158378194 and 158378203.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60587 + ... + 63146.

Almost surely, 2^158378240 is an apocalyptic number.

158378240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

158378240 is an abundant number, since it is smaller than the sum of its proper divisors (220990204).

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

158378240 is an equidigital number, since it uses as much as digits as its factorization.

158378240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123754 (or 123740 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 158378240 is about 12584.8416756032. The cubic root of 158378240 is about 541.0430684937.

The spelling of 158378240 in words is "one hundred fifty-eight million, three hundred seventy-eight thousand, two hundred forty".