20761208 has 32 divisors (see below), whose sum is σ = 42411600. Its totient is φ = 9470208.

The previous prime is 20761207. The next prime is 20761229. The reversal of 20761208 is 80216702.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20761207) 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, 8135 + ... + 10377.

Almost surely, 2^20761208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20761208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21205800).

20761208 is an abundant number, since it is smaller than the sum of its proper divisors (21650392).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20761208 is a wasteful number, since it uses less digits than its factorization.

20761208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2351 (or 2347 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 20761208 is about 4556.4468613164. The cubic root of 20761208 is about 274.8427001243.

The spelling of 20761208 in words is "twenty million, seven hundred sixty-one thousand, two hundred eight".