21295266 has 16 divisors (see below), whose sum is σ = 42636000. Its totient is φ = 7090848.

The previous prime is 21295259. The next prime is 21295273. The reversal of 21295266 is 66259212.

It is an interprime number because it is at equal distance from previous prime (21295259) and next prime (21295273).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9150 + ... + 11238.

It is an arithmetic number, because the mean of its divisors is an integer number (2664750).

Almost surely, 2^21295266 is an apocalyptic number.

21295266 is an abundant number, since it is smaller than the sum of its proper divisors (21340734).

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

21295266 is a wasteful number, since it uses less digits than its factorization.

21295266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3793.

The product of its digits is 12960, while the sum is 33.

The square root of 21295266 is about 4614.6794038156. The cubic root of 21295266 is about 277.1794464291.

The spelling of 21295266 in words is "twenty-one million, two hundred ninety-five thousand, two hundred sixty-six".