22250819 has 4 divisors (see below), whose sum is σ = 22272096. Its totient is φ = 22229544.

The previous prime is 22250797. The next prime is 22250849. The reversal of 22250819 is 91805222.

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

It is a cyclic number.

It is not a de Polignac number, because 22250819 - 2⁸ = 22250563 is a prime.

It is a super-2 number, since 2×22250819² = 990197892341522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22250791 and 22250800.

It is not an unprimeable number, because it can be changed into a prime (22250849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8984 + ... + 11189.

It is an arithmetic number, because the mean of its divisors is an integer number (5568024).

Almost surely, 2^22250819 is an apocalyptic number.

22250819 is a deficient number, since it is larger than the sum of its proper divisors (21277).

22250819 is a wasteful number, since it uses less digits than its factorization.

22250819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21276.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 22250819 is about 4717.0773790558. The cubic root of 22250819 is about 281.2647673563.

The spelling of 22250819 in words is "twenty-two million, two hundred fifty thousand, eight hundred nineteen".