202490281 has 32 divisors (see below), whose sum is σ = 252046080. Its totient is φ = 158754816.

The previous prime is 202490257. The next prime is 202490287. The reversal of 202490281 is 182094202.

It is a cyclic number.

It is not a de Polignac number, because 202490281 - 2¹⁹ = 201965993 is a prime.

It is a super-2 number, since 2×202490281² = 82004627798917922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (202490287) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 868941 + ... + 869173.

It is an arithmetic number, because the mean of its divisors is an integer number (7876440).

Almost surely, 2^202490281 is an apocalyptic number.

It is an amenable number.

202490281 is a deficient number, since it is larger than the sum of its proper divisors (49555799).

202490281 is a wasteful number, since it uses less digits than its factorization.

202490281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 202490281 is about 14229.9079758093. The cubic root of 202490281 is about 587.2207513093.

The spelling of 202490281 in words is "two hundred two million, four hundred ninety thousand, two hundred eighty-one".