202443240 has 128 divisors (see below), whose sum is σ = 649555200. Its totient is φ = 50350080.

The previous prime is 202443239. The next prime is 202443257. The reversal of 202443240 is 42344202.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 112266 + ... + 114054.

It is an arithmetic number, because the mean of its divisors is an integer number (5074650).

Almost surely, 2^202443240 is an apocalyptic number.

202443240 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 202443240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (324777600).

202443240 is an abundant number, since it is smaller than the sum of its proper divisors (447111960).

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

202443240 is a wasteful number, since it uses less digits than its factorization.

202443240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1867 (or 1863 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 202443240 is about 14228.2549878754. The cubic root of 202443240 is about 587.1752749033.

Adding to 202443240 its reverse (42344202), we get a palindrome (244787442).

The spelling of 202443240 in words is "two hundred two million, four hundred forty-three thousand, two hundred forty".