21067334 has 16 divisors (see below), whose sum is σ = 32524800. Its totient is φ = 10228680.

The previous prime is 21067331. The next prime is 21067349. The reversal of 21067334 is 43376012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21067331) by changing a digit.

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, 16499 + ... + 17729.

It is an arithmetic number, because the mean of its divisors is an integer number (2032800).

Almost surely, 2^21067334 is an apocalyptic number.

21067334 is a deficient number, since it is larger than the sum of its proper divisors (11457466).

21067334 is a wasteful number, since it uses less digits than its factorization.

21067334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1475.

The product of its (nonzero) digits is 3024, while the sum is 26.

The square root of 21067334 is about 4589.9165569757. The cubic root of 21067334 is about 276.1869751052.

The spelling of 21067334 in words is "twenty-one million, sixty-seven thousand, three hundred thirty-four".