22229378 has 8 divisors (see below), whose sum is σ = 34245372. Its totient is φ = 10814256.

The previous prime is 22229377. The next prime is 22229381. The reversal of 22229378 is 87392222.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 21743569 + 485809 = 4663^2 + 697^2 .

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

It is not an unprimeable number, because it can be changed into a prime (22229377) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150125 + ... + 150272.

Almost surely, 2^22229378 is an apocalyptic number.

22229378 is a deficient number, since it is larger than the sum of its proper divisors (12015994).

22229378 is a wasteful number, since it uses less digits than its factorization.

22229378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300436.

The product of its digits is 24192, while the sum is 35.

The square root of 22229378 is about 4714.8041316687. The cubic root of 22229378 is about 281.1743956123.

The spelling of 22229378 in words is "twenty-two million, two hundred twenty-nine thousand, three hundred seventy-eight".