28787603 has 8 divisors (see below), whose sum is σ = 32634000. Its totient is φ = 25174368.

The previous prime is 28787587. The next prime is 28787611. The reversal of 28787603 is 30678782.

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

It is a cyclic number.

It is not a de Polignac number, because 28787603 - 2⁴ = 28787587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28787203) 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, 58028 + ... + 58521.

It is an arithmetic number, because the mean of its divisors is an integer number (4079250).

Almost surely, 2^28787603 is an apocalyptic number.

28787603 is a deficient number, since it is larger than the sum of its proper divisors (3846397).

28787603 is a wasteful number, since it uses less digits than its factorization.

28787603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116581.

The product of its (nonzero) digits is 112896, while the sum is 41.

The square root of 28787603 is about 5365.4079993976. The cubic root of 28787603 is about 306.4797854507.

The spelling of 28787603 in words is "twenty-eight million, seven hundred eighty-seven thousand, six hundred three".