28714688 has 14 divisors (see below), whose sum is σ = 56980836. Its totient is φ = 14357312.

The previous prime is 28714667. The next prime is 28714691. The reversal of 28714688 is 88641782.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224270 + ... + 224397.

Almost surely, 2^28714688 is an apocalyptic number.

It is an amenable number.

28714688 is a deficient number, since it is larger than the sum of its proper divisors (28266148).

28714688 is an equidigital number, since it uses as much as digits as its factorization.

28714688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448679 (or 448669 counting only the distinct ones).

The product of its digits is 172032, while the sum is 44.

The square root of 28714688 is about 5358.6087746728. The cubic root of 28714688 is about 306.2208097681.

The spelling of 28714688 in words is "twenty-eight million, seven hundred fourteen thousand, six hundred eighty-eight".