1400324240 has 80 divisors (see below), whose sum is σ = 3807458688. Its totient is φ = 468937728.

The previous prime is 1400324227. The next prime is 1400324287. The reversal of 1400324240 is 424230041.

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 (20).

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 15 ways as a sum of consecutive naturals, for example, 4997 + ... + 53156.

Almost surely, 2^1400324240 is an apocalyptic number.

1400324240 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 1400324240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1903729344).

1400324240 is an abundant number, since it is smaller than the sum of its proper divisors (2407134448).

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

1400324240 is a wasteful number, since it uses less digits than its factorization.

1400324240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58216 (or 58210 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 1400324240 is about 37420.9064561510. The cubic root of 1400324240 is about 1118.7752982014.

Adding to 1400324240 its reverse (424230041), we get a palindrome (1824554281).

The spelling of 1400324240 in words is "one billion, four hundred million, three hundred twenty-four thousand, two hundred forty".