21934833 has 8 divisors (see below), whose sum is σ = 29515200. Its totient is φ = 14488848.

The previous prime is 21934831. The next prime is 21934837. The reversal of 21934833 is 33843912.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21934833 - 2¹ = 21934831 is a prime.

It is a super-2 number, since 2×21934833² = 962273797475778, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21934794 and 21934803.

It is not an unprimeable number, because it can be changed into a prime (21934831) 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, 33213 + ... + 33866.

It is an arithmetic number, because the mean of its divisors is an integer number (3689400).

Almost surely, 2^21934833 is an apocalyptic number.

It is an amenable number.

21934833 is a deficient number, since it is larger than the sum of its proper divisors (7580367).

21934833 is a wasteful number, since it uses less digits than its factorization.

21934833 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67191.

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

The square root of 21934833 is about 4683.4637822876. The cubic root of 21934833 is about 279.9269920198.

The spelling of 21934833 in words is "twenty-one million, nine hundred thirty-four thousand, eight hundred thirty-three".