28429103 has 4 divisors (see below), whose sum is σ = 28477008. Its totient is φ = 28381200.

The previous prime is 28429087. The next prime is 28429109. The reversal of 28429103 is 30192482.

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 28429103 - 2⁴ = 28429087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28429109) 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, 23051 + ... + 24252.

It is an arithmetic number, because the mean of its divisors is an integer number (7119252).

Almost surely, 2^28429103 is an apocalyptic number.

28429103 is a deficient number, since it is larger than the sum of its proper divisors (47905).

28429103 is an equidigital number, since it uses as much as digits as its factorization.

28429103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47904.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 28429103 is about 5331.8948789338. The cubic root of 28429103 is about 305.2022415720.

The spelling of 28429103 in words is "twenty-eight million, four hundred twenty-nine thousand, one hundred three".