28078603 has 8 divisors (see below), whose sum is σ = 32306400. Its totient is φ = 23904960.

The previous prime is 28078573. The next prime is 28078627. The reversal of 28078603 is 30687082.

It is a happy number.

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 28078603 - 2⁹ = 28078091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28078703) 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, 12418 + ... + 14503.

It is an arithmetic number, because the mean of its divisors is an integer number (4038300).

Almost surely, 2^28078603 is an apocalyptic number.

28078603 is a deficient number, since it is larger than the sum of its proper divisors (4227797).

28078603 is a wasteful number, since it uses less digits than its factorization.

28078603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27077.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 28078603 is about 5298.9247022391. The cubic root of 28078603 is about 303.9427805223.

The spelling of 28078603 in words is "twenty-eight million, seventy-eight thousand, six hundred three".