28632226 has 16 divisors (see below), whose sum is σ = 49224384. Its totient is φ = 12235824.

The previous prime is 28632223. The next prime is 28632257. The reversal of 28632226 is 62223682.

It is not an unprimeable number, because it can be changed into a prime (28632223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2481 + ... + 7963.

It is an arithmetic number, because the mean of its divisors is an integer number (3076524).

Almost surely, 2^28632226 is an apocalyptic number.

28632226 is a deficient number, since it is larger than the sum of its proper divisors (20592158).

28632226 is a wasteful number, since it uses less digits than its factorization.

28632226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5865.

The product of its digits is 13824, while the sum is 31.

The square root of 28632226 is about 5350.9088947580. The cubic root of 28632226 is about 305.9273967327.

The spelling of 28632226 in words is "twenty-eight million, six hundred thirty-two thousand, two hundred twenty-six".