28669994 has 8 divisors (see below), whose sum is σ = 43092000. Its totient is φ = 14305996.

The previous prime is 28669967. The next prime is 28670003. The reversal of 28669994 is 49996682.

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

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 3 ways as a sum of consecutive naturals, for example, 13244 + ... + 15255.

It is an arithmetic number, because the mean of its divisors is an integer number (5386500).

Almost surely, 2^28669994 is an apocalyptic number.

28669994 is a deficient number, since it is larger than the sum of its proper divisors (14422006).

28669994 is a wasteful number, since it uses less digits than its factorization.

28669994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29004.

The product of its digits is 1679616, while the sum is 53.

The square root of 28669994 is about 5354.4368518080. The cubic root of 28669994 is about 306.0618511680.

The spelling of 28669994 in words is "twenty-eight million, six hundred sixty-nine thousand, nine hundred ninety-four".