28761103 has 6 divisors (see below), whose sum is σ = 32886056. Its totient is φ = 24640212.

The previous prime is 28761101. The next prime is 28761113. The reversal of 28761103 is 30116782.

It is not a de Polignac number, because 28761103 - 2¹ = 28761101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28761101) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13176 + ... + 15202.

Almost surely, 2^28761103 is an apocalyptic number.

28761103 is a deficient number, since it is larger than the sum of its proper divisors (4124953).

28761103 is an frugal number, since it uses more digits than its factorization.

28761103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4061 (or 2034 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 28761103 is about 5362.9379075279. The cubic root of 28761103 is about 306.3857147762.

Multiplying 28761103 by its sum of digits (28), we get a square (805310884 = 28378²).

Adding to 28761103 its reverse (30116782), we get a palindrome (58877885).

The spelling of 28761103 in words is "twenty-eight million, seven hundred sixty-one thousand, one hundred three".