16221832 has 32 divisors (see below), whose sum is σ = 33340320. Its totient is φ = 7338240.

The previous prime is 16221827. The next prime is 16221833. The reversal of 16221832 is 23812261.

16221832 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 16221797 and 16221806.

It is not an unprimeable number, because it can be changed into a prime (16221833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29383 + ... + 29929.

It is an arithmetic number, because the mean of its divisors is an integer number (1041885).

Almost surely, 2^16221832 is an apocalyptic number.

It is an amenable number.

16221832 is an abundant number, since it is smaller than the sum of its proper divisors (17118488).

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

16221832 is a wasteful number, since it uses less digits than its factorization.

16221832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 901 (or 897 counting only the distinct ones).

The product of its digits is 1152, while the sum is 25.

The square root of 16221832 is about 4027.6335483755. The cubic root of 16221832 is about 253.1434141357.

The spelling of 16221832 in words is "sixteen million, two hundred twenty-one thousand, eight hundred thirty-two".