128280624 has 40 divisors (see below), whose sum is σ = 332127552. Its totient is φ = 42665280.

The previous prime is 128280619. The next prime is 128280641. The reversal of 128280624 is 426082821.

It is a happy 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, 20847 + ... + 26289.

Almost surely, 2^128280624 is an apocalyptic number.

It is an amenable number.

128280624 is an abundant number, since it is smaller than the sum of its proper divisors (203846928).

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

128280624 is a wasteful number, since it uses less digits than its factorization.

128280624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5945 (or 5939 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 33.

The square root of 128280624 is about 11326.1036548321. The cubic root of 128280624 is about 504.3364470593.

The spelling of 128280624 in words is "one hundred twenty-eight million, two hundred eighty thousand, six hundred twenty-four".