21736876 has 12 divisors (see below), whose sum is σ = 43473808. Its totient is φ = 9315792.

The previous prime is 21736861. The next prime is 21736879. The reversal of 21736876 is 67863712.

21736876 is an admirable number.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (21736879) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 388131 + ... + 388186.

Almost surely, 2^21736876 is an apocalyptic number.

It is an amenable number.

21736876 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

21736876 is a wasteful number, since it uses less digits than its factorization.

21736876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 776328 (or 776326 counting only the distinct ones).

The product of its digits is 84672, while the sum is 40.

The square root of 21736876 is about 4662.2822737368. The cubic root of 21736876 is about 279.0823530140.

The spelling of 21736876 in words is "twenty-one million, seven hundred thirty-six thousand, eight hundred seventy-six".