21067132 has 12 divisors (see below), whose sum is σ = 37000656. Its totient is φ = 10495520.

The previous prime is 21067127. The next prime is 21067159. The reversal of 21067132 is 23176012.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8248 + ... + 10495.

It is an arithmetic number, because the mean of its divisors is an integer number (3083388).

Almost surely, 2^21067132 is an apocalyptic number.

It is an amenable number.

21067132 is a deficient number, since it is larger than the sum of its proper divisors (15933524).

21067132 is a wasteful number, since it uses less digits than its factorization.

21067132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19028 (or 19026 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 21067132 is about 4589.8945521657. The cubic root of 21067132 is about 276.1860923808.

The spelling of 21067132 in words is "twenty-one million, sixty-seven thousand, one hundred thirty-two".