20662444 has 24 divisors (see below), whose sum is σ = 39782736. Its totient is φ = 9389600.

The previous prime is 20662423. The next prime is 20662451. The reversal of 20662444 is 44426602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3384 + ... + 7264.

It is an arithmetic number, because the mean of its divisors is an integer number (1657614).

Almost surely, 2^20662444 is an apocalyptic number.

It is an amenable number.

20662444 is a deficient number, since it is larger than the sum of its proper divisors (19120292).

20662444 is a wasteful number, since it uses less digits than its factorization.

20662444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3918 (or 3894 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

The square root of 20662444 is about 4545.5961105228. The cubic root of 20662444 is about 274.4061853502.

The spelling of 20662444 in words is "twenty million, six hundred sixty-two thousand, four hundred forty-four".