128147015 has 8 divisors (see below), whose sum is σ = 153908160. Its totient is φ = 102429792.

The previous prime is 128146999. The next prime is 128147069. The reversal of 128147015 is 510741821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 128147015 - 2⁴ = 128146999 is a prime.

It is a congruent 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, 4175 + ... + 16544.

It is an arithmetic number, because the mean of its divisors is an integer number (19238520).

Almost surely, 2^128147015 is an apocalyptic number.

128147015 is a deficient number, since it is larger than the sum of its proper divisors (25761145).

128147015 is a wasteful number, since it uses less digits than its factorization.

128147015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21961.

The product of its (nonzero) digits is 2240, while the sum is 29.

The square root of 128147015 is about 11320.2038409209. The cubic root of 128147015 is about 504.1612912327.

Adding to 128147015 its reverse (510741821), we get a palindrome (638888836).

The spelling of 128147015 in words is "one hundred twenty-eight million, one hundred forty-seven thousand, fifteen".