28480322 has 16 divisors (see below), whose sum is σ = 47130552. Its totient is φ = 12823680.

The previous prime is 28480313. The next prime is 28480327. The reversal of 28480322 is 22308482.

It can be written as a sum of positive squares in 4 ways, for example, as 7513081 + 20967241 = 2741^2 + 4579^2 .

It is a super-2 number, since 2×28480322² = 1622257482447368, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28480327) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 12293 + ... + 14424.

Almost surely, 2^28480322 is an apocalyptic number.

28480322 is a deficient number, since it is larger than the sum of its proper divisors (18650230).

28480322 is a wasteful number, since it uses less digits than its factorization.

28480322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26773.

The product of its (nonzero) digits is 6144, while the sum is 29.

The square root of 28480322 is about 5336.6957942157. The cubic root of 28480322 is about 305.3854197652.

The spelling of 28480322 in words is "twenty-eight million, four hundred eighty thousand, three hundred twenty-two".