20630934 has 24 divisors (see below), whose sum is σ = 46143552. Its totient is φ = 6654960.

The previous prime is 20630893. The next prime is 20630963. The reversal of 20630934 is 43903602.

20630934 is a `hidden beast` number, since 20 + 630 + 9 + 3 + 4 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 20630898 and 20630907.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17929 + ... + 19044.

It is an arithmetic number, because the mean of its divisors is an integer number (1922648).

Almost surely, 2^20630934 is an apocalyptic number.

20630934 is an abundant number, since it is smaller than the sum of its proper divisors (25512618).

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

20630934 is a wasteful number, since it uses less digits than its factorization.

20630934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37012 (or 37009 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 20630934 is about 4542.1287960603. The cubic root of 20630934 is about 274.2666255782.

The spelling of 20630934 in words is "twenty million, six hundred thirty thousand, nine hundred thirty-four".