1404324240 has 160 divisors (see below), whose sum is σ = 4762945152. Its totient is φ = 339456000.

The previous prime is 1404324121. The next prime is 1404324263. The reversal of 1404324240 is 424234041.

It is a happy number.

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1404324240.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1374930 + ... + 1375950.

Almost surely, 2^1404324240 is an apocalyptic number.

1404324240 is a gapful number since it is divisible by the number (10) 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 1404324240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2381472576).

1404324240 is an abundant number, since it is smaller than the sum of its proper divisors (3358620912).

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

1404324240 is a wasteful number, since it uses less digits than its factorization.

1404324240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1569 (or 1563 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 1404324240 is about 37474.3144033350. The cubic root of 1404324240 is about 1119.8395390869.

Adding to 1404324240 its reverse (424234041), we get a palindrome (1828558281).

It can be divided in two parts, 14043 and 24240, that added together give a palindrome (38283).

The spelling of 1404324240 in words is "one billion, four hundred four million, three hundred twenty-four thousand, two hundred forty".