20704502 has 16 divisors (see below), whose sum is σ = 38224032. Its totient is φ = 8190720.

The previous prime is 20704501. The next prime is 20704507. The reversal of 20704502 is 20540702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20704501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56699 + ... + 57062.

It is an arithmetic number, because the mean of its divisors is an integer number (2389002).

Almost surely, 2^20704502 is an apocalyptic number.

20704502 is a deficient number, since it is larger than the sum of its proper divisors (17519530).

20704502 is a wasteful number, since it uses less digits than its factorization.

20704502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113783.

The product of its (nonzero) digits is 560, while the sum is 20.

The square root of 20704502 is about 4550.2199946816. The cubic root of 20704502 is about 274.5922419740.

The spelling of 20704502 in words is "twenty million, seven hundred four thousand, five hundred two".