20716632 has 24 divisors (see below), whose sum is σ = 56107740. Its totient is φ = 6905520.

The previous prime is 20716627. The next prime is 20716639. The reversal of 20716632 is 23661702.

It is a happy number.

20716632 is a `hidden beast` number, since 20 + 7 + 1 + 6 + 632 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a junction number, because it is equal to n+sod(n) for n = 20716596 and 20716605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20716639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 143794 + ... + 143937.

Almost surely, 2^20716632 is an apocalyptic number.

It is an amenable number.

20716632 is an abundant number, since it is smaller than the sum of its proper divisors (35391108).

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

20716632 is a wasteful number, since it uses less digits than its factorization.

20716632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287743 (or 287736 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 20716632 is about 4551.5527021007. The cubic root of 20716632 is about 274.6458559761.

The spelling of 20716632 in words is "twenty million, seven hundred sixteen thousand, six hundred thirty-two".