21600412 has 12 divisors (see below), whose sum is σ = 37968840. Its totient is φ = 10752176.

The previous prime is 21600391. The next prime is 21600419. The reversal of 21600412 is 21400612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21600419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10987 + ... + 12802.

It is an arithmetic number, because the mean of its divisors is an integer number (3164070).

Almost surely, 2^21600412 is an apocalyptic number.

It is an amenable number.

21600412 is a deficient number, since it is larger than the sum of its proper divisors (16368428).

21600412 is a wasteful number, since it uses less digits than its factorization.

21600412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24020 (or 24018 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 21600412 is about 4647.6243393803. The cubic root of 21600412 is about 278.4971006857.

The spelling of 21600412 in words is "twenty-one million, six hundred thousand, four hundred twelve".