22142836 has 24 divisors (see below), whose sum is σ = 40852224. Its totient is φ = 10480800.

The previous prime is 22142833. The next prime is 22142843. The reversal of 22142836 is 63824122.

It is a super-2 number, since 2×22142836² = 980610372245792, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22142833) 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, 8101 + ... + 10483.

It is an arithmetic number, because the mean of its divisors is an integer number (1702176).

Almost surely, 2^22142836 is an apocalyptic number.

It is an amenable number.

22142836 is a deficient number, since it is larger than the sum of its proper divisors (18709388).

22142836 is a wasteful number, since it uses less digits than its factorization.

22142836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2511 (or 2509 counting only the distinct ones).

The product of its digits is 4608, while the sum is 28.

The square root of 22142836 is about 4705.6174940171. The cubic root of 22142836 is about 280.8090376498.

Adding to 22142836 its reverse (63824122), we get a palindrome (85966958).

It can be divided in two parts, 2214 and 2836, that added together give a triangular number (5050 = T₁₀₀).

The spelling of 22142836 in words is "twenty-two million, one hundred forty-two thousand, eight hundred thirty-six".