22778374 has 8 divisors (see below), whose sum is σ = 34487208. Its totient is φ = 11282640.

The previous prime is 22778341. The next prime is 22778377. The reversal of 22778374 is 47387722.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22778377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53007 + ... + 53434.

It is an arithmetic number, because the mean of its divisors is an integer number (4310901).

Almost surely, 2^22778374 is an apocalyptic number.

22778374 is a deficient number, since it is larger than the sum of its proper divisors (11708834).

22778374 is a wasteful number, since it uses less digits than its factorization.

22778374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106550.

The product of its digits is 131712, while the sum is 40.

The square root of 22778374 is about 4772.6694836328. The cubic root of 22778374 is about 283.4703063978.

The spelling of 22778374 in words is "twenty-two million, seven hundred seventy-eight thousand, three hundred seventy-four".