28880787 has 8 divisors (see below), whose sum is σ = 41469904. Its totient is φ = 17772768.

The previous prime is 28880783. The next prime is 28880827. The reversal of 28880787 is 78708882.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28880787 - 2² = 28880783 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28880783) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 370228 + ... + 370305.

It is an arithmetic number, because the mean of its divisors is an integer number (5183738).

Almost surely, 2^28880787 is an apocalyptic number.

28880787 is a deficient number, since it is larger than the sum of its proper divisors (12589117).

28880787 is a wasteful number, since it uses less digits than its factorization.

28880787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740549.

The product of its (nonzero) digits is 401408, while the sum is 48.

The square root of 28880787 is about 5374.0847592869. The cubic root of 28880787 is about 306.8101157545.

The spelling of 28880787 in words is "twenty-eight million, eight hundred eighty thousand, seven hundred eighty-seven".