1347007440 has 160 divisors (see below), whose sum is σ = 4300724736. Its totient is φ = 348549120.

The previous prime is 1347007421. The next prime is 1347007447. The reversal of 1347007440 is 447007431.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1347007398 and 1347007407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1347007447) by changing a digit.

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, 3611094 + ... + 3611466.

Almost surely, 2^1347007440 is an apocalyptic number.

1347007440 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 1347007440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2150362368).

1347007440 is an abundant number, since it is smaller than the sum of its proper divisors (2953717296).

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

1347007440 is a wasteful number, since it uses less digits than its factorization.

1347007440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797 (or 791 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 30.

The square root of 1347007440 is about 36701.5999651241. The cubic root of 1347007440 is about 1104.3922020714.

Subtracting from 1347007440 its reverse (447007431), we obtain a palindrome (900000009).

The spelling of 1347007440 in words is "one billion, three hundred forty-seven million, seven thousand, four hundred forty".