21614936 has 32 divisors (see below), whose sum is σ = 47815680. Its totient is φ = 8964000.

The previous prime is 21614933. The next prime is 21614959. The reversal of 21614936 is 63941612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21614933) 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 7 ways as a sum of consecutive naturals, for example, 4490 + ... + 7961.

It is an arithmetic number, because the mean of its divisors is an integer number (1494240).

Almost surely, 2^21614936 is an apocalyptic number.

It is an amenable number.

21614936 is an abundant number, since it is smaller than the sum of its proper divisors (26200744).

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

21614936 is a wasteful number, since it uses less digits than its factorization.

21614936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12495 (or 12491 counting only the distinct ones).

The product of its digits is 7776, while the sum is 32.

The square root of 21614936 is about 4649.1865955240. The cubic root of 21614936 is about 278.5595066812.

The spelling of 21614936 in words is "twenty-one million, six hundred fourteen thousand, nine hundred thirty-six".