128504564 has 24 divisors (see below), whose sum is σ = 239137920. Its totient is φ = 60212096.

The previous prime is 128504561. The next prime is 128504567. The reversal of 128504564 is 465405821.

It is an interprime number because it is at equal distance from previous prime (128504561) and next prime (128504567).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128504561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12299 + ... + 20205.

It is an arithmetic number, because the mean of its divisors is an integer number (9964080).

Almost surely, 2^128504564 is an apocalyptic number.

It is an amenable number.

128504564 is a deficient number, since it is larger than the sum of its proper divisors (110633356).

128504564 is a wasteful number, since it uses less digits than its factorization.

128504564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8167 (or 8165 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 35.

The square root of 128504564 is about 11335.9853563773. The cubic root of 128504564 is about 504.6297505048.

The spelling of 128504564 in words is "one hundred twenty-eight million, five hundred four thousand, five hundred sixty-four".