28480864 has 12 divisors (see below), whose sum is σ = 56071764. Its totient is φ = 14240416.

The previous prime is 28480853. The next prime is 28480883. The reversal of 28480864 is 46808482.

It is a super-2 number, since 2×28480864² = 1622319228372992, which contains 22 as substring.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 444982 + ... + 445045.

It is an arithmetic number, because the mean of its divisors is an integer number (4672647).

Almost surely, 2^28480864 is an apocalyptic number.

It is an amenable number.

28480864 is a deficient number, since it is larger than the sum of its proper divisors (27590900).

28480864 is an equidigital number, since it uses as much as digits as its factorization.

28480864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 890037 (or 890029 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 40.

The square root of 28480864 is about 5336.7465744590. The cubic root of 28480864 is about 305.3873569840.

The spelling of 28480864 in words is "twenty-eight million, four hundred eighty thousand, eight hundred sixty-four".