240002440400 has 30 divisors (see below), whose sum is σ = 576605864022. Its totient is φ = 96000976000.

The previous prime is 240002440393. The next prime is 240002440423. The reversal of 240002440400 is 4044200042.

It can be written as a sum of positive squares in 3 ways, for example, as 3180057664 + 236822382736 = 56392^2 + 486644^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 300002651 + ... + 300003450.

Almost surely, 2^240002440400 is an apocalyptic number.

240002440400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

240002440400 is an abundant number, since it is smaller than the sum of its proper divisors (336603423622).

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

240002440400 is a wasteful number, since it uses less digits than its factorization.

240002440400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600006119 (or 600006108 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 240002440400 its reverse (4044200042), we get a palindrome (244046640442).

The spelling of 240002440400 in words is "two hundred forty billion, two million, four hundred forty thousand, four hundred".