21046232 has 16 divisors (see below), whose sum is σ = 39962400. Its totient is φ = 10389600.

The previous prime is 21046231. The next prime is 21046253. The reversal of 21046232 is 23264012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21046231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16019 + ... + 17282.

It is an arithmetic number, because the mean of its divisors is an integer number (2497650).

Almost surely, 2^21046232 is an apocalyptic number.

It is an amenable number.

21046232 is a deficient number, since it is larger than the sum of its proper divisors (18916168).

21046232 is a wasteful number, since it uses less digits than its factorization.

21046232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33386 (or 33382 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 21046232 is about 4587.6172464581. The cubic root of 21046232 is about 276.0947304872.

The spelling of 21046232 in words is "twenty-one million, forty-six thousand, two hundred thirty-two".