28669930 has 16 divisors (see below), whose sum is σ = 51868800. Its totient is φ = 11409552.

The previous prime is 28669919. The next prime is 28669967. The reversal of 28669930 is 3996682.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5214 + ... + 9193.

It is an arithmetic number, because the mean of its divisors is an integer number (3241800).

Almost surely, 2^28669930 is an apocalyptic number.

28669930 is a deficient number, since it is larger than the sum of its proper divisors (23198870).

28669930 is a wasteful number, since it uses less digits than its factorization.

28669930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14613.

The product of its (nonzero) digits is 139968, while the sum is 43.

The square root of 28669930 is about 5354.4308754526. The cubic root of 28669930 is about 306.0616234273.

The spelling of 28669930 in words is "twenty-eight million, six hundred sixty-nine thousand, nine hundred thirty".