28055982 has 32 divisors (see below), whose sum is σ = 57596544. Its totient is φ = 9108000.

The previous prime is 28055969. The next prime is 28055983. The reversal of 28055982 is 28955082.

It is a self number, because there is not a number n which added to its sum of digits gives 28055982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28055983) 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, 40257 + ... + 40947.

It is an arithmetic number, because the mean of its divisors is an integer number (1799892).

Almost surely, 2^28055982 is an apocalyptic number.

28055982 is an abundant number, since it is smaller than the sum of its proper divisors (29540562).

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

28055982 is a wasteful number, since it uses less digits than its factorization.

28055982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 864.

The product of its (nonzero) digits is 57600, while the sum is 39.

The square root of 28055982 is about 5296.7897825003. The cubic root of 28055982 is about 303.8611366594.

The spelling of 28055982 in words is "twenty-eight million, fifty-five thousand, nine hundred eighty-two".