158438580 has 24 divisors (see below), whose sum is σ = 443628192. Its totient is φ = 42250272.

The previous prime is 158438561. The next prime is 158438593. The reversal of 158438580 is 85834851.

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 7 ways as a sum of consecutive naturals, for example, 1320262 + ... + 1320381.

It is an arithmetic number, because the mean of its divisors is an integer number (18484508).

Almost surely, 2^158438580 is an apocalyptic number.

158438580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

158438580 is an abundant number, since it is smaller than the sum of its proper divisors (285189612).

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

158438580 is a wasteful number, since it uses less digits than its factorization.

158438580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2640655 (or 2640653 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 42.

The square root of 158438580 is about 12587.2387758396. The cubic root of 158438580 is about 541.1117698373. Note that the first 3 decimals are identical.

The spelling of 158438580 in words is "one hundred fifty-eight million, four hundred thirty-eight thousand, five hundred eighty".