20753733 has 32 divisors (see below), whose sum is σ = 37158912. Its totient is φ = 9950400.

The previous prime is 20753731. The next prime is 20753737. The reversal of 20753733 is 33735702.

It is not a de Polignac number, because 20753733 - 2¹ = 20753731 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20753733.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20753731) 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 31 ways as a sum of consecutive naturals, for example, 453 + ... + 6458.

It is an arithmetic number, because the mean of its divisors is an integer number (1161216).

Almost surely, 2^20753733 is an apocalyptic number.

It is an amenable number.

20753733 is a deficient number, since it is larger than the sum of its proper divisors (16405179).

20753733 is a wasteful number, since it uses less digits than its factorization.

20753733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6945.

The product of its (nonzero) digits is 13230, while the sum is 30.

The square root of 20753733 is about 4555.6265211275. The cubic root of 20753733 is about 274.8097107819.

The spelling of 20753733 in words is "twenty million, seven hundred fifty-three thousand, seven hundred thirty-three".