28230626 has 4 divisors (see below), whose sum is σ = 42345942. Its totient is φ = 14115312.

The previous prime is 28230623. The next prime is 28230647. The reversal of 28230626 is 62603282.

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., 17347225 + 10883401 = 4165^2 + 3299^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28230623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7057655 + ... + 7057658.

Almost surely, 2^28230626 is an apocalyptic number.

28230626 is a deficient number, since it is larger than the sum of its proper divisors (14115316).

28230626 is a wasteful number, since it uses less digits than its factorization.

28230626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14115315.

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

The square root of 28230626 is about 5313.2500411707. The cubic root of 28230626 is about 304.4903285764.

The spelling of 28230626 in words is "twenty-eight million, two hundred thirty thousand, six hundred twenty-six".