21962733 has 12 divisors (see below), whose sum is σ = 31710240. Its totient is φ = 13515216.

The previous prime is 21962729. The next prime is 21962741. The reversal of 21962733 is 33726912.

It is a happy number.

It is not a de Polignac number, because 21962733 - 2² = 21962729 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21962694 and 21962703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21962833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21153 + ... + 22166.

It is an arithmetic number, because the mean of its divisors is an integer number (2642520).

Almost surely, 2^21962733 is an apocalyptic number.

It is an amenable number.

21962733 is a deficient number, since it is larger than the sum of its proper divisors (9747507).

21962733 is a wasteful number, since it uses less digits than its factorization.

21962733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43348 (or 43335 counting only the distinct ones).

The product of its digits is 13608, while the sum is 33.

The square root of 21962733 is about 4686.4414004658. The cubic root of 21962733 is about 280.0456260682.

The spelling of 21962733 in words is "twenty-one million, nine hundred sixty-two thousand, seven hundred thirty-three".