28641268 has 24 divisors (see below), whose sum is σ = 51891840. Its totient is φ = 13823040.

The previous prime is 28641257. The next prime is 28641281. The reversal of 28641268 is 86214682.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14373 + ... + 16243.

It is an arithmetic number, because the mean of its divisors is an integer number (2162160).

Almost surely, 2^28641268 is an apocalyptic number.

It is an amenable number.

28641268 is a deficient number, since it is larger than the sum of its proper divisors (23250572).

28641268 is a wasteful number, since it uses less digits than its factorization.

28641268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2007 (or 2005 counting only the distinct ones).

The product of its digits is 36864, while the sum is 37.

The square root of 28641268 is about 5351.7537312548. The cubic root of 28641268 is about 305.9595970977.

The spelling of 28641268 in words is "twenty-eight million, six hundred forty-one thousand, two hundred sixty-eight".