21876376 has 32 divisors (see below), whose sum is σ = 41932800. Its totient is φ = 10697760.

The previous prime is 21876373. The next prime is 21876377. The reversal of 21876376 is 67367812.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21876373) 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, 114441 + ... + 114631.

It is an arithmetic number, because the mean of its divisors is an integer number (1310400).

Almost surely, 2^21876376 is an apocalyptic number.

It is an amenable number.

21876376 is a deficient number, since it is larger than the sum of its proper divisors (20056424).

21876376 is a wasteful number, since it uses less digits than its factorization.

21876376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439 (or 435 counting only the distinct ones).

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

The square root of 21876376 is about 4677.2188317418. The cubic root of 21876376 is about 279.6780994583.

The spelling of 21876376 in words is "twenty-one million, eight hundred seventy-six thousand, three hundred seventy-six".