20631932 has 6 divisors (see below), whose sum is σ = 36105888. Its totient is φ = 10315964.

The previous prime is 20631911. The next prime is 20631937. The reversal of 20631932 is 23913602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20631937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2578988 + ... + 2578995.

It is an arithmetic number, because the mean of its divisors is an integer number (6017648).

Almost surely, 2^20631932 is an apocalyptic number.

It is an amenable number.

20631932 is a deficient number, since it is larger than the sum of its proper divisors (15473956).

20631932 is a wasteful number, since it uses less digits than its factorization.

20631932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5157987 (or 5157985 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 20631932 is about 4542.2386551127. The cubic root of 20631932 is about 274.2710479612.

The spelling of 20631932 in words is "twenty million, six hundred thirty-one thousand, nine hundred thirty-two".