21234696 has 32 divisors (see below), whose sum is σ = 60671040. Its totient is φ = 6067008.

The previous prime is 21234691. The next prime is 21234701. The reversal of 21234696 is 69643212.

It is an interprime number because it is at equal distance from previous prime (21234691) and next prime (21234701).

It is not an unprimeable number, because it can be changed into a prime (21234691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63031 + ... + 63366.

It is an arithmetic number, because the mean of its divisors is an integer number (1895970).

Almost surely, 2^21234696 is an apocalyptic number.

It is an amenable number.

21234696 is an abundant number, since it is smaller than the sum of its proper divisors (39436344).

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

21234696 is a wasteful number, since it uses less digits than its factorization.

21234696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126413 (or 126409 counting only the distinct ones).

The product of its digits is 15552, while the sum is 33.

The square root of 21234696 is about 4608.1119778061. Note that the first 3 decimals coincide. The cubic root of 21234696 is about 276.9164035904.

The spelling of 21234696 in words is "twenty-one million, two hundred thirty-four thousand, six hundred ninety-six".