22702649 has 4 divisors (see below), whose sum is σ = 22828260. Its totient is φ = 22577040.

The previous prime is 22702639. The next prime is 22702657. The reversal of 22702649 is 94620722.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1836025 + 20866624 = 1355^2 + 4568^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22702649 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22702639) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 62534 + ... + 62895.

It is an arithmetic number, because the mean of its divisors is an integer number (5707065).

Almost surely, 2^22702649 is an apocalyptic number.

It is an amenable number.

22702649 is a deficient number, since it is larger than the sum of its proper divisors (125611).

22702649 is a wasteful number, since it uses less digits than its factorization.

22702649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125610.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 22702649 is about 4764.7296880306. The cubic root of 22702649 is about 283.1558323837.

The spelling of 22702649 in words is "twenty-two million, seven hundred two thousand, six hundred forty-nine".