28047782 has 16 divisors (see below), whose sum is σ = 49201152. Its totient is φ = 11740680.

The previous prime is 28047763. The next prime is 28047793. The reversal of 28047782 is 28774082.

It is a congruent number.

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, 22694 + ... + 23897.

It is an arithmetic number, because the mean of its divisors is an integer number (3075072).

Almost surely, 2^28047782 is an apocalyptic number.

28047782 is a deficient number, since it is larger than the sum of its proper divisors (21153370).

28047782 is a wasteful number, since it uses less digits than its factorization.

28047782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46643.

The product of its (nonzero) digits is 50176, while the sum is 38.

The square root of 28047782 is about 5296.0156721822. The cubic root of 28047782 is about 303.8315303280.

The spelling of 28047782 in words is "twenty-eight million, forty-seven thousand, seven hundred eighty-two".