20202897 has 16 divisors (see below), whose sum is σ = 31647168. Its totient is φ = 11302080.

The previous prime is 20202883. The next prime is 20202943. The reversal of 20202897 is 79820202.

It is not a de Polignac number, because 20202897 - 2⁴ = 20202881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20202827) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23118 + ... + 23975.

It is an arithmetic number, because the mean of its divisors is an integer number (1977948).

Almost surely, 2^20202897 is an apocalyptic number.

It is an amenable number.

20202897 is a deficient number, since it is larger than the sum of its proper divisors (11444271).

20202897 is a wasteful number, since it uses less digits than its factorization.

20202897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47120.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 20202897 is about 4494.7632863144. The cubic root of 20202897 is about 272.3565869952.

The spelling of 20202897 in words is "twenty million, two hundred two thousand, eight hundred ninety-seven".