28064626 has 4 divisors (see below), whose sum is σ = 42096942. Its totient is φ = 14032312.

The previous prime is 28064599. The next prime is 28064627. The reversal of 28064626 is 62646082.

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

It can be written as a sum of positive squares in only one way, i.e., 20693401 + 7371225 = 4549^2 + 2715^2 .

It is a junction number, because it is equal to n+sod(n) for n = 28064591 and 28064600.

It is not an unprimeable number, because it can be changed into a prime (28064627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7016155 + ... + 7016158.

Almost surely, 2^28064626 is an apocalyptic number.

28064626 is the 3351-st centered pentagonal number.

28064626 is a deficient number, since it is larger than the sum of its proper divisors (14032316).

28064626 is a wasteful number, since it uses less digits than its factorization.

28064626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14032315.

The product of its (nonzero) digits is 27648, while the sum is 34.

The square root of 28064626 is about 5297.6056855904. The cubic root of 28064626 is about 303.8923398204.

The spelling of 28064626 in words is "twenty-eight million, sixty-four thousand, six hundred twenty-six".