20708368 has 10 divisors (see below), whose sum is σ = 40122494. Its totient is φ = 10354176.

The previous prime is 20708323. The next prime is 20708377. The reversal of 20708368 is 86380702.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 13046544 + 7661824 = 3612^2 + 2768^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 647121 + ... + 647152.

Almost surely, 2^20708368 is an apocalyptic number.

It is an amenable number.

20708368 is a deficient number, since it is larger than the sum of its proper divisors (19414126).

20708368 is a wasteful number, since it uses less digits than its factorization.

20708368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1294281 (or 1294275 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 20708368 is about 4550.6447894776. The cubic root of 20708368 is about 274.6093317763.

The spelling of 20708368 in words is "twenty million, seven hundred eight thousand, three hundred sixty-eight".