22790147 has 2 divisors, whose sum is σ = 22790148. Its totient is φ = 22790146.

The previous prime is 22790111. The next prime is 22790167. The reversal of 22790147 is 74109722.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22790147 is a prime.

It is not a weakly prime, because it can be changed into another prime (22790167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11395073 + 11395074.

It is an arithmetic number, because the mean of its divisors is an integer number (11395074).

Almost surely, 2^22790147 is an apocalyptic number.

22790147 is a deficient number, since it is larger than the sum of its proper divisors (1).

22790147 is an equidigital number, since it uses as much as digits as its factorization.

22790147 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 22790147 is about 4773.9027011450. The cubic root of 22790147 is about 283.5191351848.

Adding to 22790147 its reverse (74109722), we get a palindrome (96899869).

The spelling of 22790147 in words is "twenty-two million, seven hundred ninety thousand, one hundred forty-seven".