128466513 has 32 divisors (see below), whose sum is σ = 218822400. Its totient is φ = 72966528.

The previous prime is 128466497. The next prime is 128466517. The reversal of 128466513 is 315664821.

It is a happy number.

128466513 is a `hidden beast` number, since 1 + 2 + 84 + 66 + 513 = 666.

It is not a de Polignac number, because 128466513 - 2⁴ = 128466497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128466517) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30733 + ... + 34661.

It is an arithmetic number, because the mean of its divisors is an integer number (6838200).

Almost surely, 2^128466513 is an apocalyptic number.

It is an amenable number.

128466513 is a deficient number, since it is larger than the sum of its proper divisors (90355887).

128466513 is a wasteful number, since it uses less digits than its factorization.

128466513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4118 (or 4112 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 128466513 is about 11334.3069042619. The cubic root of 128466513 is about 504.5799375861.

The spelling of 128466513 in words is "one hundred twenty-eight million, four hundred sixty-six thousand, five hundred thirteen".