22016493 has 6 divisors (see below), whose sum is σ = 31801614. Its totient is φ = 14677656.

The previous prime is 22016471. The next prime is 22016507. The reversal of 22016493 is 39461022.

It can be written as a sum of positive squares in only one way, i.e., 13704804 + 8311689 = 3702^2 + 2883^2 .

It is not a de Polignac number, because 22016493 - 2¹⁴ = 22000109 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22016413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1223130 + ... + 1223147.

It is an arithmetic number, because the mean of its divisors is an integer number (5300269).

Almost surely, 2^22016493 is an apocalyptic number.

It is an amenable number.

22016493 is a deficient number, since it is larger than the sum of its proper divisors (9785121).

22016493 is a wasteful number, since it uses less digits than its factorization.

22016493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2446283 (or 2446280 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 22016493 is about 4692.1735901392. The cubic root of 22016493 is about 280.2739368396.

The spelling of 22016493 in words is "twenty-two million, sixteen thousand, four hundred ninety-three".