147728815 has 24 divisors (see below), whose sum is σ = 194477760. Its totient is φ = 107662464.

The previous prime is 147728807. The next prime is 147728851. The reversal of 147728815 is 518827741.

It is not a de Polignac number, because 147728815 - 2³ = 147728807 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65649 + ... + 67861.

It is an arithmetic number, because the mean of its divisors is an integer number (8103240).

Almost surely, 2^147728815 is an apocalyptic number.

147728815 is a deficient number, since it is larger than the sum of its proper divisors (46748945).

147728815 is a wasteful number, since it uses less digits than its factorization.

147728815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2323 (or 2310 counting only the distinct ones).

The product of its digits is 125440, while the sum is 43.

The square root of 147728815 is about 12154.3743154471. The cubic root of 147728815 is about 528.6339748066.

The spelling of 147728815 in words is "one hundred forty-seven million, seven hundred twenty-eight thousand, eight hundred fifteen".