28432960 has 28 divisors (see below), whose sum is σ = 67706748. Its totient is φ = 11373056.

The previous prime is 28432913. The next prime is 28432981. The reversal of 28432960 is 6923482.

It can be written as a sum of positive squares in 2 ways, for example, as 22202944 + 6230016 = 4712^2 + 2496^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44107 + ... + 44746.

Almost surely, 2^28432960 is an apocalyptic number.

28432960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28432960 is an abundant number, since it is smaller than the sum of its proper divisors (39273788).

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

28432960 is an equidigital number, since it uses as much as digits as its factorization.

28432960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88870 (or 88860 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 28432960 is about 5332.2565579687. The cubic root of 28432960 is about 305.2160432950.

It can be divided in two parts, 28432 and 960, that added together give a palindrome (29392).

The spelling of 28432960 in words is "twenty-eight million, four hundred thirty-two thousand, nine hundred sixty".