28632426 has 8 divisors (see below), whose sum is σ = 57264864. Its totient is φ = 9544140.

The previous prime is 28632407. The next prime is 28632433. The reversal of 28632426 is 62423682.

It is a sphenic number, since it is the product of 3 distinct primes.

28632426 is an admirable number.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2386030 + ... + 2386041.

It is an arithmetic number, because the mean of its divisors is an integer number (7158108).

Almost surely, 2^28632426 is an apocalyptic number.

28632426 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28632426 is a wasteful number, since it uses less digits than its factorization.

28632426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4772076.

The product of its digits is 27648, while the sum is 33.

The square root of 28632426 is about 5350.9275831392. The cubic root of 28632426 is about 305.9281090459.

The spelling of 28632426 in words is "twenty-eight million, six hundred thirty-two thousand, four hundred twenty-six".