20065650 has 48 divisors (see below), whose sum is σ = 54291168. Its totient is φ = 4864000.

The previous prime is 20065621. The next prime is 20065657. The reversal of 20065650 is 5656002.

It is a self number, because there is not a number n which added to its sum of digits gives 20065650.

It is not an unprimeable number, because it can be changed into a prime (20065657) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4431 + ... + 7730.

It is an arithmetic number, because the mean of its divisors is an integer number (1131066).

Almost surely, 2^20065650 is an apocalyptic number.

20065650 is an abundant number, since it is smaller than the sum of its proper divisors (34225518).

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

20065650 is a wasteful number, since it uses less digits than its factorization.

20065650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12187 (or 12182 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 20065650 is about 4479.4698347014. The cubic root of 20065650 is about 271.7384398081.

The spelling of 20065650 in words is "twenty million, sixty-five thousand, six hundred fifty".