28423107 has 24 divisors (see below), whose sum is σ = 43430400. Its totient is φ = 17862768.

The previous prime is 28423081. The next prime is 28423121. The reversal of 28423107 is 70132482.

It is not a de Polignac number, because 28423107 - 2⁸ = 28422851 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28423007) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61158 + ... + 61620.

It is an arithmetic number, because the mean of its divisors is an integer number (1809600).

Almost surely, 2^28423107 is an apocalyptic number.

28423107 is a deficient number, since it is larger than the sum of its proper divisors (15007293).

28423107 is a wasteful number, since it uses less digits than its factorization.

28423107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 847 (or 844 counting only the distinct ones).

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

The square root of 28423107 is about 5331.3325726313. The cubic root of 28423107 is about 305.1807832644.

Adding to 28423107 its reverse (70132482), we get a palindrome (98555589).

The spelling of 28423107 in words is "twenty-eight million, four hundred twenty-three thousand, one hundred seven".