158275820 has 24 divisors (see below), whose sum is σ = 336117600. Its totient is φ = 62598272.

The previous prime is 158275813. The next prime is 158275847. The reversal of 158275820 is 28572851.

It is a happy number.

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, 42680 + ... + 46239.

It is an arithmetic number, because the mean of its divisors is an integer number (14004900).

Almost surely, 2^158275820 is an apocalyptic number.

158275820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

158275820 is an abundant number, since it is smaller than the sum of its proper divisors (177841780).

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

158275820 is a wasteful number, since it uses less digits than its factorization.

158275820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89017 (or 89015 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 38.

The square root of 158275820 is about 12580.7718364177. The cubic root of 158275820 is about 540.9264161465.

The spelling of 158275820 in words is "one hundred fifty-eight million, two hundred seventy-five thousand, eight hundred twenty".