28740716 has 6 divisors (see below), whose sum is σ = 50296260. Its totient is φ = 14370356.

The previous prime is 28740709. The next prime is 28740721. The reversal of 28740716 is 61704782.

It is a happy 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 as a sum of consecutive naturals, namely, 3592586 + ... + 3592593.

It is an arithmetic number, because the mean of its divisors is an integer number (8382710).

Almost surely, 2^28740716 is an apocalyptic number.

It is an amenable number.

28740716 is a deficient number, since it is larger than the sum of its proper divisors (21555544).

28740716 is a wasteful number, since it uses less digits than its factorization.

28740716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7185183 (or 7185181 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 28740716 is about 5361.0368400152. The cubic root of 28740716 is about 306.3133049197.

The spelling of 28740716 in words is "twenty-eight million, seven hundred forty thousand, seven hundred sixteen".