28942603 has 4 divisors (see below), whose sum is σ = 29116080. Its totient is φ = 28769128.

The previous prime is 28942601. The next prime is 28942631. The reversal of 28942603 is 30624982.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28942603 - 2¹ = 28942601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28942601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86488 + ... + 86821.

It is an arithmetic number, because the mean of its divisors is an integer number (7279020).

Almost surely, 2^28942603 is an apocalyptic number.

28942603 is a deficient number, since it is larger than the sum of its proper divisors (173477).

28942603 is a wasteful number, since it uses less digits than its factorization.

28942603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173476.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 28942603 is about 5379.8329899728. The cubic root of 28942603 is about 307.0288570101.

The spelling of 28942603 in words is "twenty-eight million, nine hundred forty-two thousand, six hundred three".