21082914 has 24 divisors (see below), whose sum is σ = 47154432. Its totient is φ = 6800760.

The previous prime is 21082903. The next prime is 21082939. The reversal of 21082914 is 41928012.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18334 + ... + 19449.

It is an arithmetic number, because the mean of its divisors is an integer number (1964768).

Almost surely, 2^21082914 is an apocalyptic number.

21082914 is an abundant number, since it is smaller than the sum of its proper divisors (26071518).

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

21082914 is a wasteful number, since it uses less digits than its factorization.

21082914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37822 (or 37819 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 21082914 is about 4591.6134419178. The cubic root of 21082914 is about 276.2550415056.

The spelling of 21082914 in words is "twenty-one million, eighty-two thousand, nine hundred fourteen".