20289302 has 16 divisors (see below), whose sum is σ = 34948800. Its totient is φ = 8736840.

The previous prime is 20289293. The next prime is 20289317. The reversal of 20289302 is 20398202.

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 23852 + ... + 24687.

It is an arithmetic number, because the mean of its divisors is an integer number (2184300).

Almost surely, 2^20289302 is an apocalyptic number.

20289302 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20289302 is a deficient number, since it is larger than the sum of its proper divisors (14659498).

20289302 is a wasteful number, since it uses less digits than its factorization.

20289302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48571.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 20289302 is about 4504.3647720850. The cubic root of 20289302 is about 272.7443119388.

Subtracting 20289302 from its reverse (20398202), we obtain a square (108900 = 330²).

The spelling of 20289302 in words is "twenty million, two hundred eighty-nine thousand, three hundred two".