22146436 has 27 divisors (see below), whose sum is σ = 42199983. Its totient is φ = 10164960.

The previous prime is 22146433. The next prime is 22146451. The reversal of 22146436 is 63464122.

The square root of 22146436 is 4706.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 17056900 + 5089536 = 4130^2 + 2256^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22146433) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 122266 + ... + 122446.

Almost surely, 2^22146436 is an apocalyptic number.

22146436 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

22146436 is the 4706-th square number.

It is an amenable number.

22146436 is a deficient number, since it is larger than the sum of its proper divisors (20053547).

22146436 is a wasteful number, since it uses less digits than its factorization.

22146436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392 (or 196 counting only the distinct ones).

The product of its digits is 6912, while the sum is 28.

The cubic root of 22146436 is about 280.8242548779.

The spelling of 22146436 in words is "twenty-two million, one hundred forty-six thousand, four hundred thirty-six".