21296276 has 24 divisors (see below), whose sum is σ = 38021760. Its totient is φ = 10435392.

The previous prime is 21296273. The next prime is 21296281. The reversal of 21296276 is 67269212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21296273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57845 + ... + 58211.

It is an arithmetic number, because the mean of its divisors is an integer number (1584240).

Almost surely, 2^21296276 is an apocalyptic number.

It is an amenable number.

21296276 is a deficient number, since it is larger than the sum of its proper divisors (16725484).

21296276 is a wasteful number, since it uses less digits than its factorization.

21296276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623 (or 621 counting only the distinct ones).

The product of its digits is 18144, while the sum is 35.

The square root of 21296276 is about 4614.7888359057. The cubic root of 21296276 is about 277.1838284173.

The spelling of 21296276 in words is "twenty-one million, two hundred ninety-six thousand, two hundred seventy-six".