28060403 has 4 divisors (see below), whose sum is σ = 32069040. Its totient is φ = 24051768.

The previous prime is 28060399. The next prime is 28060411. The reversal of 28060403 is 30406082.

It is a happy number.

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 28060403 - 2² = 28060399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28060433) 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, 2004308 + ... + 2004321.

It is an arithmetic number, because the mean of its divisors is an integer number (8017260).

Almost surely, 2^28060403 is an apocalyptic number.

28060403 is a deficient number, since it is larger than the sum of its proper divisors (4008637).

28060403 is an equidigital number, since it uses as much as digits as its factorization.

28060403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4008636.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 28060403 is about 5297.2070943092. The cubic root of 28060403 is about 303.8770964113.

Adding to 28060403 its reverse (30406082), we get a palindrome (58466485).

The spelling of 28060403 in words is "twenty-eight million, sixty thousand, four hundred three".