28946868 has 12 divisors (see below), whose sum is σ = 67542720. Its totient is φ = 9648952.

The previous prime is 28946849. The next prime is 28946873. The reversal of 28946868 is 86864982.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 28946868.

It is a congruent number.

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, 1206108 + ... + 1206131.

It is an arithmetic number, because the mean of its divisors is an integer number (5628560).

Almost surely, 2^28946868 is an apocalyptic number.

It is an amenable number.

28946868 is an abundant number, since it is smaller than the sum of its proper divisors (38595852).

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

28946868 is a wasteful number, since it uses less digits than its factorization.

28946868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2412246 (or 2412244 counting only the distinct ones).

The product of its digits is 1327104, while the sum is 51.

The square root of 28946868 is about 5380.2293631406. The cubic root of 28946868 is about 307.0439375905.

The spelling of 28946868 in words is "twenty-eight million, nine hundred forty-six thousand, eight hundred sixty-eight".