20520202 has 24 divisors (see below), whose sum is σ = 32711040. Its totient is φ = 9644040.

The previous prime is 20520193. The next prime is 20520211. The reversal of 20520202 is 20202502.

It is an interprime number because it is at equal distance from previous prime (20520193) and next prime (20520211).

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 11 ways as a sum of consecutive naturals, for example, 114549 + ... + 114727.

It is an arithmetic number, because the mean of its divisors is an integer number (1362960).

Almost surely, 2^20520202 is an apocalyptic number.

20520202 is a deficient number, since it is larger than the sum of its proper divisors (12190838).

20520202 is a wasteful number, since it uses less digits than its factorization.

20520202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298 (or 255 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 13.

The square root of 20520202 is about 4529.9229574023. The cubic root of 20520202 is about 273.7750564695.

Adding to 20520202 its reverse (20202502), we get a palindrome (40722704).

The spelling of 20520202 in words is "twenty million, five hundred twenty thousand, two hundred two".