22136460 has 48 divisors (see below), whose sum is σ = 62457696. Its totient is φ = 5857792.

The previous prime is 22136459. The next prime is 22136479. The reversal of 22136460 is 6463122.

It is a super-2 number, since 2×22136460² = 980045722663200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22136460.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 6874 + ... + 9566.

It is an arithmetic number, because the mean of its divisors is an integer number (1301202).

Almost surely, 2^22136460 is an apocalyptic number.

22136460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22136460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31228848).

22136460 is an abundant number, since it is smaller than the sum of its proper divisors (40321236).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22136460 is a wasteful number, since it uses less digits than its factorization.

22136460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2842 (or 2840 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 22136460 is about 4704.9399571089. The cubic root of 22136460 is about 280.7820822002.

Adding to 22136460 its reverse (6463122), we get a palindrome (28599582).

The spelling of 22136460 in words is "twenty-two million, one hundred thirty-six thousand, four hundred sixty".