28743782 has 12 divisors (see below), whose sum is σ = 43746828. Its totient is φ = 14164500.

The previous prime is 28743769. The next prime is 28743791. The reversal of 28743782 is 28734782.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 8657 + ... + 11507.

It is an arithmetic number, because the mean of its divisors is an integer number (3645569).

Almost surely, 2^28743782 is an apocalyptic number.

28743782 is a deficient number, since it is larger than the sum of its proper divisors (15003046).

28743782 is an equidigital number, since it uses as much as digits as its factorization.

28743782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2995 (or 2924 counting only the distinct ones).

The product of its digits is 150528, while the sum is 41.

The square root of 28743782 is about 5361.3227845374. The cubic root of 28743782 is about 306.3241968219.

The spelling of 28743782 in words is "twenty-eight million, seven hundred forty-three thousand, seven hundred eighty-two".