28668430 has 48 divisors (see below), whose sum is σ = 61535376. Its totient is φ = 9582720.

The previous prime is 28668427. The next prime is 28668469. The reversal of 28668430 is 3486682.

It is a self number, because there is not a number n which added to its sum of digits gives 28668430.

It is a congruent 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 in 23 ways as a sum of consecutive naturals, for example, 19377 + ... + 20803.

It is an arithmetic number, because the mean of its divisors is an integer number (1281987).

Almost surely, 2^28668430 is an apocalyptic number.

28668430 is an abundant number, since it is smaller than the sum of its proper divisors (32866946).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28668430 is a wasteful number, since it uses less digits than its factorization.

28668430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1489 (or 1482 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 37.

The square root of 28668430 is about 5354.2908027114. The cubic root of 28668430 is about 306.0562856577.

The spelling of 28668430 in words is "twenty-eight million, six hundred sixty-eight thousand, four hundred thirty".