22013146 has 16 divisors (see below), whose sum is σ = 34995240. Its totient is φ = 10366720.

The previous prime is 22013143. The next prime is 22013149. The reversal of 22013146 is 64131022.

It is an interprime number because it is at equal distance from previous prime (22013143) and next prime (22013149).

It can be written as a sum of positive squares in 4 ways, for example, as 7868025 + 14145121 = 2805^2 + 3761^2 .

It is not an unprimeable number, because it can be changed into a prime (22013143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2251 + ... + 7006.

Almost surely, 2^22013146 is an apocalyptic number.

22013146 is a deficient number, since it is larger than the sum of its proper divisors (12982094).

22013146 is a wasteful number, since it uses less digits than its factorization.

22013146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9329.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 22013146 is about 4691.8169188492. The cubic root of 22013146 is about 280.2597334814.

Adding to 22013146 its reverse (64131022), we get a palindrome (86144168).

It can be divided in two parts, 220 and 13146, that added together give a triangular number (13366 = T₁₆₃).

The spelling of 22013146 in words is "twenty-two million, thirteen thousand, one hundred forty-six".