21833152 has 28 divisors (see below), whose sum is σ = 47265336. Its totient is φ = 9923840.

The previous prime is 21833129. The next prime is 21833173. The reversal of 21833152 is 25133812.

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, 14803 + ... + 16210.

Almost surely, 2^21833152 is an apocalyptic number.

21833152 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21833152 is an abundant number, since it is smaller than the sum of its proper divisors (25432184).

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

21833152 is a wasteful number, since it uses less digits than its factorization.

21833152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31036 (or 31026 counting only the distinct ones).

The product of its digits is 1440, while the sum is 25.

The square root of 21833152 is about 4672.5958524144. The cubic root of 21833152 is about 279.4937792167.

Adding to 21833152 its reverse (25133812), we get a palindrome (46966964).

It can be divided in two parts, 2183 and 3152, that added together give a palindrome (5335).

The spelling of 21833152 in words is "twenty-one million, eight hundred thirty-three thousand, one hundred fifty-two".