28303464 has 64 divisors (see below), whose sum is σ = 85132800. Its totient is φ = 7660224.

The previous prime is 28303463. The next prime is 28303493. The reversal of 28303464 is 46430382.

It is not an unprimeable number, because it can be changed into a prime (28303463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1242 + ... + 7625.

It is an arithmetic number, because the mean of its divisors is an integer number (1330200).

Almost surely, 2^28303464 is an apocalyptic number.

28303464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28303464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42566400).

28303464 is an abundant number, since it is smaller than the sum of its proper divisors (56829336).

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

28303464 is a wasteful number, since it uses less digits than its factorization.

28303464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8902 (or 8898 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 28303464 is about 5320.0999990602. The cubic root of 28303464 is about 304.7519760933.

The spelling of 28303464 in words is "twenty-eight million, three hundred three thousand, four hundred sixty-four".