22641506 has 4 divisors (see below), whose sum is σ = 33962262. Its totient is φ = 11320752.

The previous prime is 22641497. The next prime is 22641517. The reversal of 22641506 is 60514622.

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., 21298225 + 1343281 = 4615^2 + 1159^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5660375 + ... + 5660378.

Almost surely, 2^22641506 is an apocalyptic number.

22641506 is a deficient number, since it is larger than the sum of its proper divisors (11320756).

22641506 is a wasteful number, since it uses less digits than its factorization.

22641506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11320755.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 22641506 is about 4758.3091534704. The cubic root of 22641506 is about 282.9014044699.

The spelling of 22641506 in words is "twenty-two million, six hundred forty-one thousand, five hundred six".