202009494 has 16 divisors (see below), whose sum is σ = 408020400. Its totient is φ = 66669600.

The previous prime is 202009481. The next prime is 202009519. The reversal of 202009494 is 494900202.

It is a super-2 number, since 2×202009494² = 81615671332272072, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 166069 + ... + 167280.

It is an arithmetic number, because the mean of its divisors is an integer number (25501275).

Almost surely, 2^202009494 is an apocalyptic number.

202009494 is an abundant number, since it is smaller than the sum of its proper divisors (206010906).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

202009494 is a wasteful number, since it uses less digits than its factorization.

202009494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333455.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 202009494 is about 14213.0043973820. The cubic root of 202009494 is about 586.7556230610.

Adding to 202009494 its reverse (494900202), we get a palindrome (696909696).

The spelling of 202009494 in words is "two hundred two million, nine thousand, four hundred ninety-four".