202002640 has 80 divisors (see below), whose sum is σ = 540286848. Its totient is φ = 68802048.

The previous prime is 202002601. The next prime is 202002649. The reversal of 202002640 is 46200202.

202002640 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202002649) 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, 90174 + ... + 92386.

Almost surely, 2^202002640 is an apocalyptic number.

202002640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 202002640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (270143424).

202002640 is an abundant number, since it is smaller than the sum of its proper divisors (338284208).

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

202002640 is a wasteful number, since it uses less digits than its factorization.

202002640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2396 (or 2390 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 202002640 is about 14212.7632781243. The cubic root of 202002640 is about 586.7489869562.

Adding to 202002640 its reverse (46200202), we get a palindrome (248202842).

The spelling of 202002640 in words is "two hundred two million, two thousand, six hundred forty".