128420304 has 20 divisors (see below), whose sum is σ = 331752576. Its totient is φ = 42806752.

The previous prime is 128420291. The next prime is 128420393. The reversal of 128420304 is 403024821.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1337664 + ... + 1337759.

Almost surely, 2^128420304 is an apocalyptic number.

It is an amenable number.

128420304 is an abundant number, since it is smaller than the sum of its proper divisors (203332272).

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

128420304 is a wasteful number, since it uses less digits than its factorization.

128420304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2675434 (or 2675428 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 128420304 is about 11332.2682636796. The cubic root of 128420304 is about 504.5194317263.

The spelling of 128420304 in words is "one hundred twenty-eight million, four hundred twenty thousand, three hundred four".