22701906 has 12 divisors (see below), whose sum is σ = 49187502. Its totient is φ = 7567296.

The previous prime is 22701901. The next prime is 22701923. The reversal of 22701906 is 60910722.

It can be written as a sum of positive squares in only one way, i.e., 14630625 + 8071281 = 3825^2 + 2841^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22701906.

It is not an unprimeable number, because it can be changed into a prime (22701901) 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 5 ways as a sum of consecutive naturals, for example, 630591 + ... + 630626.

Almost surely, 2^22701906 is an apocalyptic number.

22701906 is an abundant number, since it is smaller than the sum of its proper divisors (26485596).

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

22701906 is a wasteful number, since it uses less digits than its factorization.

22701906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1261225 (or 1261222 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 22701906 is about 4764.6517186464. The cubic root of 22701906 is about 283.1527433597.

The spelling of 22701906 in words is "twenty-two million, seven hundred one thousand, nine hundred six".