21034068 has 24 divisors (see below), whose sum is σ = 53541600. Its totient is φ = 6373920.

The previous prime is 21034067. The next prime is 21034129. The reversal of 21034068 is 86043012.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21034061) 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, 79543 + ... + 79806.

It is an arithmetic number, because the mean of its divisors is an integer number (2230900).

Almost surely, 2^21034068 is an apocalyptic number.

It is an amenable number.

21034068 is an abundant number, since it is smaller than the sum of its proper divisors (32507532).

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

21034068 is a wasteful number, since it uses less digits than its factorization.

21034068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159367 (or 159365 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 21034068 is about 4586.2913121606. The cubic root of 21034068 is about 276.0415291426.

The spelling of 21034068 in words is "twenty-one million, thirty-four thousand, sixty-eight".