20983612 has 24 divisors (see below), whose sum is σ = 39677456. Its totient is φ = 9652608.

The previous prime is 20983609. The next prime is 20983637. The reversal of 20983612 is 21638902.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 23323 + ... + 24205.

Almost surely, 2^20983612 is an apocalyptic number.

It is an amenable number.

20983612 is a deficient number, since it is larger than the sum of its proper divisors (18693844).

20983612 is a wasteful number, since it uses less digits than its factorization.

20983612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1357 (or 1355 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 20983612 is about 4580.7872685817. The cubic root of 20983612 is about 275.8206318989.

The spelling of 20983612 in words is "twenty million, nine hundred eighty-three thousand, six hundred twelve".