28630226 has 8 divisors (see below), whose sum is σ = 45205680. Its totient is φ = 13561668.

The previous prime is 28630223. The next prime is 28630237. The reversal of 28630226 is 62203682.

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

It is a super-2 number, since 2×28630226² = 1639379681622152, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28630223) 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, 376676 + ... + 376751.

It is an arithmetic number, because the mean of its divisors is an integer number (5650710).

Almost surely, 2^28630226 is an apocalyptic number.

28630226 is a deficient number, since it is larger than the sum of its proper divisors (16575454).

28630226 is a wasteful number, since it uses less digits than its factorization.

28630226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 753448.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 28630226 is about 5350.7220073556. The cubic root of 28630226 is about 305.9202734183.

The spelling of 28630226 in words is "twenty-eight million, six hundred thirty thousand, two hundred twenty-six".