21414996 has 48 divisors (see below), whose sum is σ = 56212800. Its totient is φ = 7049376.

The previous prime is 21414983. The next prime is 21415027. The reversal of 21414996 is 69941412.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 21414996.

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, 7770 + ... + 10158.

It is an arithmetic number, because the mean of its divisors is an integer number (1171100).

Almost surely, 2^21414996 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21414996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28106400).

21414996 is an abundant number, since it is smaller than the sum of its proper divisors (34797804).

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

21414996 is a wasteful number, since it uses less digits than its factorization.

21414996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2485 (or 2477 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 21414996 is about 4627.6339526804. The cubic root of 21414996 is about 277.6979449636.

The spelling of 21414996 in words is "twenty-one million, four hundred fourteen thousand, nine hundred ninety-six".