128544516 has 48 divisors (see below), whose sum is σ = 347760000. Its totient is φ = 40984416.

The previous prime is 128544499. The next prime is 128544517. The reversal of 128544516 is 615445821.

It is a happy number.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (128544517) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23391 + ... + 28358.

It is an arithmetic number, because the mean of its divisors is an integer number (7245000).

Almost surely, 2^128544516 is an apocalyptic number.

It is an amenable number.

128544516 is an abundant number, since it is smaller than the sum of its proper divisors (219215484).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128544516 is a wasteful number, since it uses less digits than its factorization.

128544516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51785 (or 51777 counting only the distinct ones).

The product of its digits is 38400, while the sum is 36.

The square root of 128544516 is about 11337.7473953162. The cubic root of 128544516 is about 504.6820414590.

It can be divided in two parts, 128 and 544516, that added together give a square (544644 = 738²).

The spelling of 128544516 in words is "one hundred twenty-eight million, five hundred forty-four thousand, five hundred sixteen".