28707808 has 12 divisors (see below), whose sum is σ = 56518560. Its totient is φ = 14353888.

The previous prime is 28707787. The next prime is 28707817. The reversal of 28707808 is 80870782.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 448528 + ... + 448591.

It is an arithmetic number, because the mean of its divisors is an integer number (4709880).

Almost surely, 2^28707808 is an apocalyptic number.

It is an amenable number.

28707808 is a deficient number, since it is larger than the sum of its proper divisors (27810752).

28707808 is an equidigital number, since it uses as much as digits as its factorization.

28707808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 897129 (or 897121 counting only the distinct ones).

The product of its (nonzero) digits is 50176, while the sum is 40.

The square root of 28707808 is about 5357.9667785458. The cubic root of 28707808 is about 306.1963511188.

The spelling of 28707808 in words is "twenty-eight million, seven hundred seven thousand, eight hundred eight".