734643240 has 64 divisors (see below), whose sum is σ = 2210198400. Its totient is φ = 195347712.

The previous prime is 734643211. The next prime is 734643241. The reversal of 734643240 is 42346437.

It is not an unprimeable number, because it can be changed into a prime (734643241) 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 15 ways as a sum of consecutive naturals, for example, 34554 + ... + 51606.

It is an arithmetic number, because the mean of its divisors is an integer number (34534350).

Almost surely, 2^734643240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 734643240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1105099200).

734643240 is an abundant number, since it is smaller than the sum of its proper divisors (1475555160).

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

734643240 is a wasteful number, since it uses less digits than its factorization.

734643240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17426 (or 17422 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 33.

The square root of 734643240 is about 27104.3029794164. The cubic root of 734643240 is about 902.3163542100.

Adding to 734643240 its reverse (42346437), we get a palindrome (776989677).

The spelling of 734643240 in words is "seven hundred thirty-four million, six hundred forty-three thousand, two hundred forty".