22250818 has 4 divisors (see below), whose sum is σ = 33376230. Its totient is φ = 11125408.

The previous prime is 22250797. The next prime is 22250849. The reversal of 22250818 is 81805222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 22250089 + 729 = 4717^2 + 27^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5562703 + ... + 5562706.

Almost surely, 2^22250818 is an apocalyptic number.

22250818 is a deficient number, since it is larger than the sum of its proper divisors (11125412).

22250818 is a wasteful number, since it uses less digits than its factorization.

22250818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11125411.

The product of its (nonzero) digits is 2560, while the sum is 28.

The square root of 22250818 is about 4717.0772730580. The cubic root of 22250818 is about 281.2647631427.

It can be divided in two parts, 222 and 50818, that added together give a triangular number (51040 = T₃₁₉).

The spelling of 22250818 in words is "twenty-two million, two hundred fifty thousand, eight hundred eighteen".