22521682 has 4 divisors (see below), whose sum is σ = 33782526. Its totient is φ = 11260840.

The previous prime is 22521673. The next prime is 22521683. The reversal of 22521682 is 28612522.

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

It can be written as a sum of positive squares in only one way, i.e., 19900521 + 2621161 = 4461^2 + 1619^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22521682.

It is not an unprimeable number, because it can be changed into a prime (22521683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5630419 + ... + 5630422.

Almost surely, 2^22521682 is an apocalyptic number.

22521682 is a deficient number, since it is larger than the sum of its proper divisors (11260844).

22521682 is a wasteful number, since it uses less digits than its factorization.

22521682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11260843.

The product of its digits is 3840, while the sum is 28.

The square root of 22521682 is about 4745.7014233936. The cubic root of 22521682 is about 282.4014619655.

The spelling of 22521682 in words is "twenty-two million, five hundred twenty-one thousand, six hundred eighty-two".