28632423 has 4 divisors (see below), whose sum is σ = 38176568. Its totient is φ = 19088280.

The previous prime is 28632407. The next prime is 28632433. The reversal of 28632423 is 32423682.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 28632423 - 2⁴ = 28632407 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 (28632433) 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, 4772068 + ... + 4772073.

It is an arithmetic number, because the mean of its divisors is an integer number (9544142).

Almost surely, 2^28632423 is an apocalyptic number.

28632423 is a deficient number, since it is larger than the sum of its proper divisors (9544145).

28632423 is an equidigital number, since it uses as much as digits as its factorization.

28632423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9544144.

The product of its digits is 13824, while the sum is 30.

The square root of 28632423 is about 5350.9273028140. The cubic root of 28632423 is about 305.9280983612.

The spelling of 28632423 in words is "twenty-eight million, six hundred thirty-two thousand, four hundred twenty-three".