128280472 has 24 divisors (see below), whose sum is σ = 246561300. Its totient is φ = 62569280.

The previous prime is 128280421. The next prime is 128280473. The reversal of 128280472 is 274082821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128280473) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8679 + ... + 18217.

Almost surely, 2^128280472 is an apocalyptic number.

It is an amenable number.

128280472 is a deficient number, since it is larger than the sum of its proper divisors (118280828).

128280472 is an equidigital number, since it uses as much as digits as its factorization.

128280472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9627 (or 9582 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 34.

The square root of 128280472 is about 11326.0969446672. The cubic root of 128280472 is about 504.3362478627.

The spelling of 128280472 in words is "one hundred twenty-eight million, two hundred eighty thousand, four hundred seventy-two".