22678349 has 2 divisors, whose sum is σ = 22678350. Its totient is φ = 22678348.

The previous prime is 22678333. The next prime is 22678363. The reversal of 22678349 is 94387622.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11854249 + 10824100 = 3443^2 + 3290^2 .

It is a cyclic number.

It is not a de Polignac number, because 22678349 - 2⁴ = 22678333 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22678379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11339174 + 11339175.

It is an arithmetic number, because the mean of its divisors is an integer number (11339175).

Almost surely, 2^22678349 is an apocalyptic number.

It is an amenable number.

22678349 is a deficient number, since it is larger than the sum of its proper divisors (1).

22678349 is an equidigital number, since it uses as much as digits as its factorization.

22678349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 41.

The square root of 22678349 is about 4762.1790180547. The cubic root of 22678349 is about 283.0547701225.

The spelling of 22678349 in words is "twenty-two million, six hundred seventy-eight thousand, three hundred forty-nine".