20155202 has 8 divisors (see below), whose sum is σ = 30274236. Its totient is φ = 10063792.

The previous prime is 20155169. The next prime is 20155249. The reversal of 20155202 is 20255102.

It can be written as a sum of positive squares in 2 ways, for example, as 19545241 + 609961 = 4421^2 + 781^2 .

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

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 3 ways as a sum of consecutive naturals, for example, 4973 + ... + 8064.

Almost surely, 2^20155202 is an apocalyptic number.

20155202 is a deficient number, since it is larger than the sum of its proper divisors (10119034).

20155202 is a wasteful number, since it uses less digits than its factorization.

20155202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13812.

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 20155202 is about 4489.4545325685. The cubic root of 20155202 is about 272.1420916327.

The spelling of 20155202 in words is "twenty million, one hundred fifty-five thousand, two hundred two".