202004391 has 16 divisors (see below), whose sum is σ = 272764800. Its totient is φ = 132967968.

The previous prime is 202004389. The next prime is 202004419. The reversal of 202004391 is 193400202.

202004391 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 202004391 - 2¹ = 202004389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202004311) 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, 80920 + ... + 83378.

It is an arithmetic number, because the mean of its divisors is an integer number (17047800).

Almost surely, 2^202004391 is an apocalyptic number.

202004391 is a deficient number, since it is larger than the sum of its proper divisors (70760409).

202004391 is a wasteful number, since it uses less digits than its factorization.

202004391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2798.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 202004391 is about 14212.8248775534. The cubic root of 202004391 is about 586.7506823045.

Adding to 202004391 its reverse (193400202), we get a palindrome (395404593).

The spelling of 202004391 in words is "two hundred two million, four thousand, three hundred ninety-one".