28946688 has 36 divisors (see below), whose sum is σ = 77042448. Its totient is φ = 9648640.

The previous prime is 28946683. The next prime is 28946707. The reversal of 28946688 is 88664982.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 28946688.

It is not an unprimeable number, because it can be changed into a prime (28946683) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18078 + ... + 19613.

It is an arithmetic number, because the mean of its divisors is an integer number (2140068).

Almost surely, 2^28946688 is an apocalyptic number.

It is an amenable number.

28946688 is an abundant number, since it is smaller than the sum of its proper divisors (48095760).

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

28946688 is an equidigital number, since it uses as much as digits as its factorization.

28946688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37710 (or 37696 counting only the distinct ones).

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

The square root of 28946688 is about 5380.2126352032. The cubic root of 28946688 is about 307.0433011599.

The spelling of 28946688 in words is "twenty-eight million, nine hundred forty-six thousand, six hundred eighty-eight".