21414726 has 32 divisors (see below), whose sum is σ = 47825280. Its totient is φ = 7102728.

The previous prime is 21414719. The next prime is 21414733. The reversal of 21414726 is 62741412.

It is an interprime number because it is at equal distance from previous prime (21414719) and next prime (21414733).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 21414726.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 11385 + ... + 13131.

It is an arithmetic number, because the mean of its divisors is an integer number (1494540).

Almost surely, 2^21414726 is an apocalyptic number.

21414726 is an abundant number, since it is smaller than the sum of its proper divisors (26410554).

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

21414726 is a wasteful number, since it uses less digits than its factorization.

21414726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1985 (or 1979 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 21414726 is about 4627.6047800131. The cubic root of 21414726 is about 277.6967778879.

The spelling of 21414726 in words is "twenty-one million, four hundred fourteen thousand, seven hundred twenty-six".