20629733 has 8 divisors (see below), whose sum is σ = 21000000. Its totient is φ = 20262528.

The previous prime is 20629717. The next prime is 20629747. The reversal of 20629733 is 33792602.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20629733 - 2⁴ = 20629717 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20629733.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20629703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15893 + ... + 17141.

It is an arithmetic number, because the mean of its divisors is an integer number (2625000).

Almost surely, 2^20629733 is an apocalyptic number.

It is an amenable number.

20629733 is a deficient number, since it is larger than the sum of its proper divisors (370267).

20629733 is a wasteful number, since it uses less digits than its factorization.

20629733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1531.

The product of its (nonzero) digits is 13608, while the sum is 32.

The square root of 20629733 is about 4541.9965874051. The cubic root of 20629733 is about 274.2613034632.

The spelling of 20629733 in words is "twenty million, six hundred twenty-nine thousand, seven hundred thirty-three".