28790066 has 8 divisors (see below), whose sum is σ = 45062784. Its totient is φ = 13769140.

The previous prime is 28790051. The next prime is 28790071. The reversal of 28790066 is 66009782.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 312890 + ... + 312981.

It is an arithmetic number, because the mean of its divisors is an integer number (5632848).

Almost surely, 2^28790066 is an apocalyptic number.

28790066 is a deficient number, since it is larger than the sum of its proper divisors (16272718).

28790066 is a wasteful number, since it uses less digits than its factorization.

28790066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625896.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 28790066 is about 5365.6375203698. The cubic root of 28790066 is about 306.4885257661.

The spelling of 28790066 in words is "twenty-eight million, seven hundred ninety thousand, sixty-six".