20520502 has 8 divisors (see below), whose sum is σ = 30870000. Its totient is φ = 10230504.

The previous prime is 20520499. The next prime is 20520509. The reversal of 20520502 is 20502502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20520509) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 14002 + ... + 15397.

It is an arithmetic number, because the mean of its divisors is an integer number (3858750).

Almost surely, 2^20520502 is an apocalyptic number.

20520502 is a deficient number, since it is larger than the sum of its proper divisors (10349498).

20520502 is a wasteful number, since it uses less digits than its factorization.

20520502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29750.

The product of its (nonzero) digits is 200, while the sum is 16.

The square root of 20520502 is about 4529.9560704272. The cubic root of 20520502 is about 273.7763906363.

The spelling of 20520502 in words is "twenty million, five hundred twenty thousand, five hundred two".