202001994 has 24 divisors (see below), whose sum is σ = 452764260. Its totient is φ = 65011968.

The previous prime is 202001959. The next prime is 202001999. The reversal of 202001994 is 499100202.

It can be written as a sum of positive squares in 2 ways, for example, as 201270969 + 731025 = 14187^2 + 855^2 .

It is not an unprimeable number, because it can be changed into a prime (202001999) 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 11 ways as a sum of consecutive naturals, for example, 192967 + ... + 194010.

Almost surely, 2^202001994 is an apocalyptic number.

202001994 is an abundant number, since it is smaller than the sum of its proper divisors (250762266).

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

202001994 is a wasteful number, since it uses less digits than its factorization.

202001994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387014 (or 387011 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 202001994 is about 14212.7405520540. The cubic root of 202001994 is about 586.7483614854.

The spelling of 202001994 in words is "two hundred two million, one thousand, nine hundred ninety-four".