28769966 has 4 divisors (see below), whose sum is σ = 43154952. Its totient is φ = 14384982.

The previous prime is 28769947. The next prime is 28769977. The reversal of 28769966 is 66996782.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7192490 + ... + 7192493.

It is an arithmetic number, because the mean of its divisors is an integer number (10788738).

Almost surely, 2^28769966 is an apocalyptic number.

28769966 is a deficient number, since it is larger than the sum of its proper divisors (14384986).

28769966 is a wasteful number, since it uses less digits than its factorization.

28769966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14384985.

The product of its digits is 1959552, while the sum is 53.

The square root of 28769966 is about 5363.7641633465. The cubic root of 28769966 is about 306.4171834082.

The spelling of 28769966 in words is "twenty-eight million, seven hundred sixty-nine thousand, nine hundred sixty-six".