28763423 has 4 divisors (see below), whose sum is σ = 30976008. Its totient is φ = 26550840.

The previous prime is 28763417. The next prime is 28763453. The reversal of 28763423 is 32436782.

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 28763423 - 2²⁰ = 27714847 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 (28763453) 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, 1106273 + ... + 1106298.

It is an arithmetic number, because the mean of its divisors is an integer number (7744002).

Almost surely, 2^28763423 is an apocalyptic number.

28763423 is a deficient number, since it is larger than the sum of its proper divisors (2212585).

28763423 is a wasteful number, since it uses less digits than its factorization.

28763423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2212584.

The product of its digits is 48384, while the sum is 35.

The square root of 28763423 is about 5363.1542025193. The cubic root of 28763423 is about 306.3939527049.

The spelling of 28763423 in words is "twenty-eight million, seven hundred sixty-three thousand, four hundred twenty-three".