28788734 has 16 divisors (see below), whose sum is σ = 46797072. Its totient is φ = 13203648.

The previous prime is 28788719. The next prime is 28788763. The reversal of 28788734 is 43788782.

It is a happy number.

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, 842 + ... + 7634.

It is an arithmetic number, because the mean of its divisors is an integer number (2924817).

Almost surely, 2^28788734 is an apocalyptic number.

28788734 is a deficient number, since it is larger than the sum of its proper divisors (18008338).

28788734 is a wasteful number, since it uses less digits than its factorization.

28788734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6971.

The product of its digits is 602112, while the sum is 47.

The square root of 28788734 is about 5365.5133957525. The cubic root of 28788734 is about 306.4837990314.

The spelling of 28788734 in words is "twenty-eight million, seven hundred eighty-eight thousand, seven hundred thirty-four".