202320440240 has 80 divisors (see below), whose sum is σ = 497571242688. Its totient is φ = 76349104128.

The previous prime is 202320440207. The next prime is 202320440243. The reversal of 202320440240 is 42044023202.

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

It is a super-2 number, since 2×202320440240² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is not an unprimeable number, because it can be changed into a prime (202320440243) 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, 618809 + ... + 887448.

Almost surely, 2^202320440240 is an apocalyptic number.

202320440240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202320440240 is an abundant number, since it is smaller than the sum of its proper divisors (295250802448).

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

202320440240 is a wasteful number, since it uses less digits than its factorization.

202320440240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1506366 (or 1506360 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 23.

Adding to 202320440240 its reverse (42044023202), we get a palindrome (244364463442).

The spelling of 202320440240 in words is "two hundred two billion, three hundred twenty million, four hundred forty thousand, two hundred forty".