21324876 has 24 divisors (see below), whose sum is σ = 51103920. Its totient is φ = 6916032.

The previous prime is 21324871. The next prime is 21324881. The reversal of 21324876 is 67842312.

It is an interprime number because it is at equal distance from previous prime (21324871) and next prime (21324881).

It is not an unprimeable number, because it can be changed into a prime (21324871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23571 + ... + 24458.

It is an arithmetic number, because the mean of its divisors is an integer number (2129330).

Almost surely, 2^21324876 is an apocalyptic number.

It is an amenable number.

21324876 is an abundant number, since it is smaller than the sum of its proper divisors (29779044).

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

21324876 is a wasteful number, since it uses less digits than its factorization.

21324876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48073 (or 48071 counting only the distinct ones).

The product of its digits is 16128, while the sum is 33.

The square root of 21324876 is about 4617.8865295717. The cubic root of 21324876 is about 277.3078549747.

The spelling of 21324876 in words is "twenty-one million, three hundred twenty-four thousand, eight hundred seventy-six".