20650630 has 64 divisors (see below), whose sum is σ = 49932288. Its totient is φ = 5938560.

The previous prime is 20650607. The next prime is 20650657. The reversal of 20650630 is 3605602.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8979 + ... + 11041.

It is an arithmetic number, because the mean of its divisors is an integer number (780192).

Almost surely, 2^20650630 is an apocalyptic number.

20650630 is an abundant number, since it is smaller than the sum of its proper divisors (29281658).

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

20650630 is a wasteful number, since it uses less digits than its factorization.

20650630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2101.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 20650630 is about 4544.2964251906. The cubic root of 20650630 is about 274.3538770379.

The spelling of 20650630 in words is "twenty million, six hundred fifty thousand, six hundred thirty".