128474015 has 8 divisors (see below), whose sum is σ = 163237680. Its totient is φ = 96733312.

The previous prime is 128474011. The next prime is 128474051. The reversal of 128474015 is 510474821.

It is a happy number.

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 128474015 - 2² = 128474011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128474011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 755645 + ... + 755814.

It is an arithmetic number, because the mean of its divisors is an integer number (20404710).

Almost surely, 2^128474015 is an apocalyptic number.

128474015 is a deficient number, since it is larger than the sum of its proper divisors (34763665).

128474015 is a wasteful number, since it uses less digits than its factorization.

128474015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1511481.

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 128474015 is about 11334.6378415898. The cubic root of 128474015 is about 504.5897593026.

The spelling of 128474015 in words is "one hundred twenty-eight million, four hundred seventy-four thousand, fifteen".