28304468 has 12 divisors (see below), whose sum is σ = 49588980. Its totient is φ = 14136192.

The previous prime is 28304459. The next prime is 28304477. The reversal of 28304468 is 86440382.

It is an interprime number because it is at equal distance from previous prime (28304459) and next prime (28304477).

It can be written as a sum of positive squares in 2 ways, for example, as 16662724 + 11641744 = 4082^2 + 3412^2 .

It is a super-2 number, since 2×28304468² = 1602285817526048, which contains 22 as substring.

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, 530 + ... + 7542.

It is an arithmetic number, because the mean of its divisors is an integer number (4132415).

Almost surely, 2^28304468 is an apocalyptic number.

It is an amenable number.

28304468 is a deficient number, since it is larger than the sum of its proper divisors (21284512).

28304468 is a wasteful number, since it uses less digits than its factorization.

28304468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8026 (or 8024 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 35.

The square root of 28304468 is about 5320.1943573520. The cubic root of 28304468 is about 304.7555795082.

The spelling of 28304468 in words is "twenty-eight million, three hundred four thousand, four hundred sixty-eight".