28472103 has 12 divisors (see below), whose sum is σ = 44865288. Its totient is φ = 17255760.

The previous prime is 28472099. The next prime is 28472123. The reversal of 28472103 is 30127482.

It is not a de Polignac number, because 28472103 - 2² = 28472099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28472123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 143700 + ... + 143897.

It is an arithmetic number, because the mean of its divisors is an integer number (3738774).

Almost surely, 2^28472103 is an apocalyptic number.

28472103 is a deficient number, since it is larger than the sum of its proper divisors (16393185).

28472103 is a wasteful number, since it uses less digits than its factorization.

28472103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287614 (or 287611 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 28472103 is about 5335.9256928859. The cubic root of 28472103 is about 305.3560403660.

Adding to 28472103 its reverse (30127482), we get a palindrome (58599585).

It can be divided in two parts, 2847 and 2103, that added together give a triangular number (4950 = T₉₉).

The spelling of 28472103 in words is "twenty-eight million, four hundred seventy-two thousand, one hundred three".