1440000324 has 72 divisors (see below), whose sum is σ = 4164724928. Its totient is φ = 410961600.

The previous prime is 1440000323. The next prime is 1440000371. The reversal of 1440000324 is 4230000441.

It is a Harshad number since it is a multiple of its sum of digits (18).

1440000324 is a modest number, since divided by 324 gives 144 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 1440000297 and 1440000306.

It is not an unprimeable number, because it can be changed into a prime (1440000323) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 262134 + ... + 267570.

Almost surely, 2^1440000324 is an apocalyptic number.

1440000324 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1440000324 is an abundant number, since it is smaller than the sum of its proper divisors (2724724604).

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

1440000324 is a wasteful number, since it uses less digits than its factorization.

1440000324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6505 (or 6500 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 1440000324 is about 37947.3361910952. The cubic root of 1440000324 is about 1129.2433193505.

Adding to 1440000324 its reverse (4230000441), we get a palindrome (5670000765).

It can be divided in two parts, 1440000 and 324, that multiplied together give a square (466560000 = 21600²).

The spelling of 1440000324 in words is "one billion, four hundred forty million, three hundred twenty-four", and thus it is an aban number.