22274278 has 8 divisors (see below), whose sum is σ = 35981568. Its totient is φ = 10280424.

The previous prime is 22274261. The next prime is 22274279. The reversal of 22274278 is 87247222.

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

It is a super-2 number, since 2×22274278² = 992286920842568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22274279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 428326 + ... + 428377.

It is an arithmetic number, because the mean of its divisors is an integer number (4497696).

Almost surely, 2^22274278 is an apocalyptic number.

22274278 is a deficient number, since it is larger than the sum of its proper divisors (13707290).

22274278 is a wasteful number, since it uses less digits than its factorization.

22274278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 856718.

The product of its digits is 25088, while the sum is 34.

The square root of 22274278 is about 4719.5633272581. The cubic root of 22274278 is about 281.3635782917.

The spelling of 22274278 in words is "twenty-two million, two hundred seventy-four thousand, two hundred seventy-eight".