21614068 has 48 divisors (see below), whose sum is σ = 45896704. Its totient is φ = 8709120.

The previous prime is 21614057. The next prime is 21614141. The reversal of 21614068 is 86041612.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31780 + ... + 32452.

Almost surely, 2^21614068 is an apocalyptic number.

21614068 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21614068, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22948352).

21614068 is an abundant number, since it is smaller than the sum of its proper divisors (24282636).

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

21614068 is a wasteful number, since it uses less digits than its factorization.

21614068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 752 (or 750 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 21614068 is about 4649.0932449242. The cubic root of 21614068 is about 278.5557778878. Note that the first 3 decimals are identical.

The spelling of 21614068 in words is "twenty-one million, six hundred fourteen thousand, sixty-eight".