22428787 has 2 divisors, whose sum is σ = 22428788. Its totient is φ = 22428786.

The previous prime is 22428781. The next prime is 22428793. The reversal of 22428787 is 78782422.

It is a balanced prime because it is at equal distance from previous prime (22428781) and next prime (22428793).

It is a cyclic number.

It is not a de Polignac number, because 22428787 - 2¹¹ = 22426739 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22428781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11214393 + 11214394.

It is an arithmetic number, because the mean of its divisors is an integer number (11214394).

Almost surely, 2^22428787 is an apocalyptic number.

22428787 is a deficient number, since it is larger than the sum of its proper divisors (1).

22428787 is an equidigital number, since it uses as much as digits as its factorization.

22428787 is an evil number, because the sum of its binary digits is even.

The product of its digits is 100352, while the sum is 40.

The square root of 22428787 is about 4735.9040319669. The cubic root of 22428787 is about 282.0126538929.

The spelling of 22428787 in words is "twenty-two million, four hundred twenty-eight thousand, seven hundred eighty-seven".