28782322 has 16 divisors (see below), whose sum is σ = 44985600. Its totient is φ = 13795920.

The previous prime is 28782319. The next prime is 28782331. The reversal of 28782322 is 22328782.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4629 + ... + 8887.

It is an arithmetic number, because the mean of its divisors is an integer number (2811600).

Almost surely, 2^28782322 is an apocalyptic number.

28782322 is a deficient number, since it is larger than the sum of its proper divisors (16203278).

28782322 is a wasteful number, since it uses less digits than its factorization.

28782322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4401.

The product of its digits is 21504, while the sum is 34.

The square root of 28782322 is about 5364.9158427696. The cubic root of 28782322 is about 306.4610433701.

The spelling of 28782322 in words is "twenty-eight million, seven hundred eighty-two thousand, three hundred twenty-two".