21037882 has 8 divisors (see below), whose sum is σ = 31716000. Its totient is φ = 10465884.

The previous prime is 21037859. The next prime is 21037889. The reversal of 21037882 is 28873012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (21037889) 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, 26032 + ... + 26827.

It is an arithmetic number, because the mean of its divisors is an integer number (3964500).

Almost surely, 2^21037882 is an apocalyptic number.

21037882 is a deficient number, since it is larger than the sum of its proper divisors (10678118).

21037882 is a wasteful number, since it uses less digits than its factorization.

21037882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53060.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 21037882 is about 4586.7070976900. The cubic root of 21037882 is about 276.0582125340.

The spelling of 21037882 in words is "twenty-one million, thirty-seven thousand, eight hundred eighty-two".