28626233 has 4 divisors (see below), whose sum is σ = 28683648. Its totient is φ = 28568820.

The previous prime is 28626209. The next prime is 28626239. The reversal of 28626233 is 33262682.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28626233 - 2¹² = 28622137 is a prime.

It is a super-2 number, since 2×28626233² = 1638922431540578, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28626233.

It is not an unprimeable number, because it can be changed into a prime (28626239) 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, 27953 + ... + 28958.

It is an arithmetic number, because the mean of its divisors is an integer number (7170912).

Almost surely, 2^28626233 is an apocalyptic number.

It is an amenable number.

28626233 is a deficient number, since it is larger than the sum of its proper divisors (57415).

28626233 is an equidigital number, since it uses as much as digits as its factorization.

28626233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57414.

The product of its digits is 20736, while the sum is 32.

The square root of 28626233 is about 5350.3488671301. The cubic root of 28626233 is about 305.9060507288.

The spelling of 28626233 in words is "twenty-eight million, six hundred twenty-six thousand, two hundred thirty-three".