20630772 has 36 divisors (see below), whose sum is σ = 52372320. Its totient is φ = 6847632.

The previous prime is 20630767. The next prime is 20630773. The reversal of 20630772 is 27703602.

20630772 is a `hidden beast` number, since 20 + 630 + 7 + 7 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20630773) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8379 + ... + 10557.

Almost surely, 2^20630772 is an apocalyptic number.

It is an amenable number.

20630772 is an abundant number, since it is smaller than the sum of its proper divisors (31741548).

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

20630772 is a wasteful number, since it uses less digits than its factorization.

20630772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2452 (or 2447 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 27.

The square root of 20630772 is about 4542.1109629775. The cubic root of 20630772 is about 274.2659077030.

The spelling of 20630772 in words is "twenty million, six hundred thirty thousand, seven hundred seventy-two".