21079110 has 32 divisors (see below), whose sum is σ = 54482400. Its totient is φ = 5188608.

The previous prime is 21079087. The next prime is 21079127. The reversal of 21079110 is 1197012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26635 + ... + 27414.

It is an arithmetic number, because the mean of its divisors is an integer number (1702575).

Almost surely, 2^21079110 is an apocalyptic number.

21079110 is an abundant number, since it is smaller than the sum of its proper divisors (33403290).

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

21079110 is a wasteful number, since it uses less digits than its factorization.

21079110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54072.

The product of its (nonzero) digits is 126, while the sum is 21.

The square root of 21079110 is about 4591.1991897542. The cubic root of 21079110 is about 276.2384255642.

The spelling of 21079110 in words is "twenty-one million, seventy-nine thousand, one hundred ten".