20753708 has 12 divisors (see below), whose sum is σ = 37205112. Its totient is φ = 10123680.

The previous prime is 20753701. The next prime is 20753729. The reversal of 20753708 is 80735702.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (20753701) 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 3 ways as a sum of consecutive naturals, for example, 63110 + ... + 63437.

It is an arithmetic number, because the mean of its divisors is an integer number (3100426).

Almost surely, 2^20753708 is an apocalyptic number.

It is an amenable number.

20753708 is a deficient number, since it is larger than the sum of its proper divisors (16451404).

20753708 is a wasteful number, since it uses less digits than its factorization.

20753708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126592 (or 126590 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 20753708 is about 4555.6237772670. The cubic root of 20753708 is about 274.8096004364.

The spelling of 20753708 in words is "twenty million, seven hundred fifty-three thousand, seven hundred eight".