28365626 has 4 divisors (see below), whose sum is σ = 42548442. Its totient is φ = 14182812.

The previous prime is 28365619. The next prime is 28365641. The reversal of 28365626 is 62656382.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 62656382 = 2 ⋅31328191.

It can be written as a sum of positive squares in only one way, i.e., 28079401 + 286225 = 5299^2 + 535^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 28365626.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7091405 + ... + 7091408.

Almost surely, 2^28365626 is an apocalyptic number.

28365626 is a deficient number, since it is larger than the sum of its proper divisors (14182816).

28365626 is a wasteful number, since it uses less digits than its factorization.

28365626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14182815.

The product of its digits is 103680, while the sum is 38.

The square root of 28365626 is about 5325.9389782460. The cubic root of 28365626 is about 304.9749186578.

The spelling of 28365626 in words is "twenty-eight million, three hundred sixty-five thousand, six hundred twenty-six".