20678132 has 12 divisors (see below), whose sum is σ = 36220800. Its totient is φ = 10329336.

The previous prime is 20678123. The next prime is 20678149. The reversal of 20678132 is 23187602.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20678095 and 20678104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4619 + ... + 7917.

It is an arithmetic number, because the mean of its divisors is an integer number (3018400).

Almost surely, 2^20678132 is an apocalyptic number.

It is an amenable number.

20678132 is a deficient number, since it is larger than the sum of its proper divisors (15542668).

20678132 is a wasteful number, since it uses less digits than its factorization.

20678132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4870 (or 4868 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 20678132 is about 4547.3214093574. The cubic root of 20678132 is about 274.4756155879.

The spelling of 20678132 in words is "twenty million, six hundred seventy-eight thousand, one hundred thirty-two".