22649436 has 24 divisors (see below), whose sum is σ = 58721040. Its totient is φ = 7549776.

The previous prime is 22649413. The next prime is 22649477. The reversal of 22649436 is 63494622.

22649436 is a `hidden beast` number, since 2 + 2 + 649 + 4 + 3 + 6 = 666.

It is a super-3 number, since 3×22649436³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 22649436.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104751 + ... + 104966.

It is an arithmetic number, because the mean of its divisors is an integer number (2446710).

Almost surely, 2^22649436 is an apocalyptic number.

It is an amenable number.

22649436 is an abundant number, since it is smaller than the sum of its proper divisors (36071604).

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

22649436 is a wasteful number, since it uses less digits than its factorization.

22649436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209730 (or 209722 counting only the distinct ones).

The product of its digits is 62208, while the sum is 36.

The square root of 22649436 is about 4759.1423597115. The cubic root of 22649436 is about 282.9344285728.

The spelling of 22649436 in words is "twenty-two million, six hundred forty-nine thousand, four hundred thirty-six".