21241296 has 60 divisors (see below), whose sum is σ = 62950212. Its totient is φ = 6663168.

The previous prime is 21241271. The next prime is 21241327. The reversal of 21241296 is 69214212.

It can be written as a sum of positive squares in 2 ways, for example, as 11128896 + 10112400 = 3336^2 + 3180^2 .

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

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, 1891 + ... + 6786.

Almost surely, 2^21241296 is an apocalyptic number.

It is an amenable number.

21241296 is an abundant number, since it is smaller than the sum of its proper divisors (41708916).

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

21241296 is a wasteful number, since it uses less digits than its factorization.

21241296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8708 (or 8699 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 21241296 is about 4608.8280506003. The cubic root of 21241296 is about 276.9450902728.

The spelling of 21241296 in words is "twenty-one million, two hundred forty-one thousand, two hundred ninety-six".