28688094 has 24 divisors (see below), whose sum is σ = 64460760. Its totient is φ = 9562536.

The previous prime is 28688089. The next prime is 28688111. The reversal of 28688094 is 49088682.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29029 + ... + 30000.

It is an arithmetic number, because the mean of its divisors is an integer number (2685865).

Almost surely, 2^28688094 is an apocalyptic number.

28688094 is an abundant number, since it is smaller than the sum of its proper divisors (35772666).

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

28688094 is an equidigital number, since it uses as much as digits as its factorization.

28688094 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59046 (or 59034 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The square root of 28688094 is about 5356.1267722114. The cubic root of 28688094 is about 306.1262454860.

The spelling of 28688094 in words is "twenty-eight million, six hundred eighty-eight thousand, ninety-four".