20667022 has 16 divisors (see below), whose sum is σ = 32927760. Its totient is φ = 9700992.

The previous prime is 20667013. The next prime is 20667029. The reversal of 20667022 is 22076602.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20667029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1888 + ... + 6700.

It is an arithmetic number, because the mean of its divisors is an integer number (2057985).

Almost surely, 2^20667022 is an apocalyptic number.

20667022 is a deficient number, since it is larger than the sum of its proper divisors (12260738).

20667022 is a wasteful number, since it uses less digits than its factorization.

20667022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4947.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 20667022 is about 4546.0996469501. The cubic root of 20667022 is about 274.4264497931.

The spelling of 20667022 in words is "twenty million, six hundred sixty-seven thousand, twenty-two".