22648387 has 2 divisors, whose sum is σ = 22648388. Its totient is φ = 22648386.

The previous prime is 22648363. The next prime is 22648393. The reversal of 22648387 is 78384622.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22648387 - 2¹⁹ = 22124099 is a prime.

It is not a weakly prime, because it can be changed into another prime (22648337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11324193 + 11324194.

It is an arithmetic number, because the mean of its divisors is an integer number (11324194).

Almost surely, 2^22648387 is an apocalyptic number.

22648387 is a deficient number, since it is larger than the sum of its proper divisors (1).

22648387 is an equidigital number, since it uses as much as digits as its factorization.

22648387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 129024, while the sum is 40.

The square root of 22648387 is about 4759.0321495027. The cubic root of 22648387 is about 282.9300605053.

The spelling of 22648387 in words is "twenty-two million, six hundred forty-eight thousand, three hundred eighty-seven".