22240786 has 8 divisors (see below), whose sum is σ = 33381900. Its totient is φ = 11113488.

The previous prime is 22240781. The next prime is 22240807. The reversal of 22240786 is 68704222.

It can be written as a sum of positive squares in 2 ways, for example, as 19580625 + 2660161 = 4425^2 + 1631^2 .

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 (22240781) 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, 2940 + ... + 7288.

Almost surely, 2^22240786 is an apocalyptic number.

22240786 is a deficient number, since it is larger than the sum of its proper divisors (11141114).

22240786 is a wasteful number, since it uses less digits than its factorization.

22240786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6908.

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 22240786 is about 4716.0137828467. The cubic root of 22240786 is about 281.2224864608. Note that the first 3 decimals are identical.

The spelling of 22240786 in words is "twenty-two million, two hundred forty thousand, seven hundred eighty-six".