22440286 has 8 divisors (see below), whose sum is σ = 36720504. Its totient is φ = 10200120.

The previous prime is 22440277. The next prime is 22440293. The reversal of 22440286 is 68204422.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 509985 + ... + 510028.

It is an arithmetic number, because the mean of its divisors is an integer number (4590063).

Almost surely, 2^22440286 is an apocalyptic number.

22440286 is a deficient number, since it is larger than the sum of its proper divisors (14280218).

22440286 is a wasteful number, since it uses less digits than its factorization.

22440286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1020026.

The product of its (nonzero) digits is 6144, while the sum is 28.

The square root of 22440286 is about 4737.1179001583. The cubic root of 22440286 is about 282.0608406193.

The spelling of 22440286 in words is "twenty-two million, four hundred forty thousand, two hundred eighty-six".