21933332 has 12 divisors (see below), whose sum is σ = 40641300. Its totient is φ = 10321536.

The previous prime is 21933293. The next prime is 21933347. The reversal of 21933332 is 23333912.

It can be written as a sum of positive squares in 2 ways, for example, as 6220036 + 15713296 = 2494^2 + 3964^2 .

It is a super-3 number, since 3×21933332³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161207 + ... + 161342.

It is an arithmetic number, because the mean of its divisors is an integer number (3386775).

Almost surely, 2^21933332 is an apocalyptic number.

It is an amenable number.

21933332 is a deficient number, since it is larger than the sum of its proper divisors (18707968).

21933332 is a wasteful number, since it uses less digits than its factorization.

21933332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322570 (or 322568 counting only the distinct ones).

The product of its digits is 2916, while the sum is 26.

The square root of 21933332 is about 4683.3035348993. The cubic root of 21933332 is about 279.9206067421.

The spelling of 21933332 in words is "twenty-one million, nine hundred thirty-three thousand, three hundred thirty-two".