20206976 has 16 divisors (see below), whose sum is σ = 40256340. Its totient is φ = 10103424.

The previous prime is 20206961. The next prime is 20206981. The reversal of 20206976 is 67960202.

It is a tau number, because it is divible by the number of its divisors (16).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78806 + ... + 79061.

Almost surely, 2^20206976 is an apocalyptic number.

It is an amenable number.

20206976 is a deficient number, since it is larger than the sum of its proper divisors (20049364).

20206976 is an equidigital number, since it uses as much as digits as its factorization.

20206976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157881 (or 157869 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 20206976 is about 4495.2170136713. The cubic root of 20206976 is about 272.3749155178.

The spelling of 20206976 in words is "twenty million, two hundred six thousand, nine hundred seventy-six".