21079334 has 8 divisors (see below), whose sum is σ = 32052360. Its totient is φ = 10395216.

The previous prime is 21079327. The next prime is 21079363. The reversal of 21079334 is 43397012.

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

It is a junction number, because it is equal to n+sod(n) for n = 21079297 and 21079306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72044 + ... + 72335.

It is an arithmetic number, because the mean of its divisors is an integer number (4006545).

Almost surely, 2^21079334 is an apocalyptic number.

21079334 is a deficient number, since it is larger than the sum of its proper divisors (10973026).

21079334 is a wasteful number, since it uses less digits than its factorization.

21079334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144454.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 21079334 is about 4591.2235841876. The cubic root of 21079334 is about 276.2394040557.

The spelling of 21079334 in words is "twenty-one million, seventy-nine thousand, three hundred thirty-four".