20530502 has 16 divisors (see below), whose sum is σ = 31456512. Its totient is φ = 10047240.

The previous prime is 20530487. The next prime is 20530519. The reversal of 20530502 is 20503502.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22703 + ... + 23589.

It is an arithmetic number, because the mean of its divisors is an integer number (1966032).

Almost surely, 2^20530502 is an apocalyptic number.

20530502 is a deficient number, since it is larger than the sum of its proper divisors (10926010).

20530502 is a wasteful number, since it uses less digits than its factorization.

20530502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1123.

The product of its (nonzero) digits is 300, while the sum is 17.

The square root of 20530502 is about 4531.0596994522. The cubic root of 20530502 is about 273.8208554242.

Subtracting from 20530502 its reverse (20503502), we obtain a cube (27000 = 30³).

The spelling of 20530502 in words is "twenty million, five hundred thirty thousand, five hundred two".