28306982 has 24 divisors (see below), whose sum is σ = 47573568. Its totient is φ = 12618320.

The previous prime is 28306981. The next prime is 28307003. The reversal of 28306982 is 28960382.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28306981) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11723 + ... + 13929.

It is an arithmetic number, because the mean of its divisors is an integer number (1982232).

Almost surely, 2^28306982 is an apocalyptic number.

28306982 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28306982 is a deficient number, since it is larger than the sum of its proper divisors (19266586).

28306982 is a wasteful number, since it uses less digits than its factorization.

28306982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2284 (or 2273 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 28306982 is about 5320.4306216696. The cubic root of 28306982 is about 304.7646020277.

The spelling of 28306982 in words is "twenty-eight million, three hundred six thousand, nine hundred eighty-two".