21014735 has 8 divisors (see below), whose sum is σ = 28820256. Its totient is φ = 14410080.

The previous prime is 21014713. The next prime is 21014743. The reversal of 21014735 is 53741012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21014735 - 2¹⁰ = 21013711 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21014735.

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 7 ways as a sum of consecutive naturals, for example, 300176 + ... + 300245.

It is an arithmetic number, because the mean of its divisors is an integer number (3602532).

Almost surely, 2^21014735 is an apocalyptic number.

21014735 is a deficient number, since it is larger than the sum of its proper divisors (7805521).

21014735 is an equidigital number, since it uses as much as digits as its factorization.

21014735 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600433.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 21014735 is about 4584.1831333401. The cubic root of 21014735 is about 275.9569307226.

Adding to 21014735 its reverse (53741012), we get a palindrome (74755747).

The spelling of 21014735 in words is "twenty-one million, fourteen thousand, seven hundred thirty-five".