20763992 has 32 divisors (see below), whose sum is σ = 39813120. Its totient is φ = 10150560.

The previous prime is 20763991. The next prime is 20764039. The reversal of 20763992 is 29936702.

It is a super-2 number, since 2×20763992² = 862286727552128, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20763991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108617 + ... + 108807.

It is an arithmetic number, because the mean of its divisors is an integer number (1244160).

Almost surely, 2^20763992 is an apocalyptic number.

It is an amenable number.

20763992 is a deficient number, since it is larger than the sum of its proper divisors (19049128).

20763992 is a wasteful number, since it uses less digits than its factorization.

20763992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431 (or 427 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 20763992 is about 4556.7523522790. The cubic root of 20763992 is about 274.8549846998.

The spelling of 20763992 in words is "twenty million, seven hundred sixty-three thousand, nine hundred ninety-two".