20707632 has 120 divisors (see below), whose sum is σ = 67026960. Its totient is φ = 5898240.

The previous prime is 20707627. The next prime is 20707651. The reversal of 20707632 is 23670702.

20707632 is a `hidden beast` number, since 20 + 7 + 0 + 7 + 632 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 20707596 and 20707605.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26544 + ... + 27312.

It is an arithmetic number, because the mean of its divisors is an integer number (558558).

Almost surely, 2^20707632 is an apocalyptic number.

20707632 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20707632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33513480).

20707632 is an abundant number, since it is smaller than the sum of its proper divisors (46319328).

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

20707632 is a wasteful number, since it uses less digits than its factorization.

20707632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 811 (or 802 counting only the distinct ones).

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

The square root of 20707632 is about 4550.5639210981. The cubic root of 20707632 is about 274.6060784238.

The spelling of 20707632 in words is "twenty million, seven hundred seven thousand, six hundred thirty-two".