22428733 has 2 divisors, whose sum is σ = 22428734. Its totient is φ = 22428732.

The previous prime is 22428727. The next prime is 22428737. The reversal of 22428733 is 33782422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19035769 + 3392964 = 4363^2 + 1842^2 .

It is a cyclic number.

It is not a de Polignac number, because 22428733 - 2¹⁷ = 22297661 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22428695 and 22428704.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22428737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11214366 + 11214367.

It is an arithmetic number, because the mean of its divisors is an integer number (11214367).

Almost surely, 2^22428733 is an apocalyptic number.

It is an amenable number.

22428733 is a deficient number, since it is larger than the sum of its proper divisors (1).

22428733 is an equidigital number, since it uses as much as digits as its factorization.

22428733 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16128, while the sum is 31.

The square root of 22428733 is about 4735.8983308344. The cubic root of 22428733 is about 282.0124275663.

The spelling of 22428733 in words is "twenty-two million, four hundred twenty-eight thousand, seven hundred thirty-three".