22019146 has 4 divisors (see below), whose sum is σ = 33028722. Its totient is φ = 11009572.

The previous prime is 22019143. The next prime is 22019147. The reversal of 22019146 is 64191022.

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., 14938225 + 7080921 = 3865^2 + 2661^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22019146.

It is not an unprimeable number, because it can be changed into a prime (22019141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5504785 + ... + 5504788.

Almost surely, 2^22019146 is an apocalyptic number.

22019146 is a deficient number, since it is larger than the sum of its proper divisors (11009576).

22019146 is a wasteful number, since it uses less digits than its factorization.

22019146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11009575.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 22019146 is about 4692.4562864240. The cubic root of 22019146 is about 280.2851941107.

The spelling of 22019146 in words is "twenty-two million, nineteen thousand, one hundred forty-six".