20090602 has 16 divisors (see below), whose sum is σ = 34637760. Its totient is φ = 8561088.

The previous prime is 20090599. The next prime is 20090611. The reversal of 20090602 is 20609002.

It is a self number, because there is not a number n which added to its sum of digits gives 20090602.

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, 1503 + ... + 6514.

It is an arithmetic number, because the mean of its divisors is an integer number (2164860).

Almost surely, 2^20090602 is an apocalyptic number.

20090602 is a deficient number, since it is larger than the sum of its proper divisors (14547158).

20090602 is a wasteful number, since it uses less digits than its factorization.

20090602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8205.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 20090602 is about 4482.2541204175. The cubic root of 20090602 is about 271.8510303790.

Adding to 20090602 its reverse (20609002), we get a palindrome (40699604).

Subtracting 20090602 from its reverse (20609002), we obtain a square (518400 = 720²).

The spelling of 20090602 in words is "twenty million, ninety thousand, six hundred two".