28624103 has 4 divisors (see below), whose sum is σ = 29016288. Its totient is φ = 28231920.

The previous prime is 28624087. The next prime is 28624133. The reversal of 28624103 is 30142682.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30142682 = 2 ⋅15071341.

It is a cyclic number.

It is not a de Polignac number, because 28624103 - 2⁴ = 28624087 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 (28624133) 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, 195983 + ... + 196128.

It is an arithmetic number, because the mean of its divisors is an integer number (7254072).

Almost surely, 2^28624103 is an apocalyptic number.

28624103 is a deficient number, since it is larger than the sum of its proper divisors (392185).

28624103 is an equidigital number, since it uses as much as digits as its factorization.

28624103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392184.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 28624103 is about 5350.1498109866. The cubic root of 28624103 is about 305.8984633287.

Adding to 28624103 its reverse (30142682), we get a palindrome (58766785).

It can be divided in two parts, 286 and 24103, that added together give a cube (24389 = 29³).

The spelling of 28624103 in words is "twenty-eight million, six hundred twenty-four thousand, one hundred three".