21034267 has 8 divisors (see below), whose sum is σ = 21890880. Its totient is φ = 20194440.

The previous prime is 21034261. The next prime is 21034297. The reversal of 21034267 is 76243012.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21034267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21034261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1609 + ... + 6682.

It is an arithmetic number, because the mean of its divisors is an integer number (2736360).

Almost surely, 2^21034267 is an apocalyptic number.

21034267 is a deficient number, since it is larger than the sum of its proper divisors (856613).

21034267 is an equidigital number, since it uses as much as digits as its factorization.

21034267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8393.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 21034267 is about 4586.3130071987. The cubic root of 21034267 is about 276.0423996683.

Adding to 21034267 its reverse (76243012), we get a palindrome (97277279).

The spelling of 21034267 in words is "twenty-one million, thirty-four thousand, two hundred sixty-seven".