730434240 has 224 divisors, whose sum is σ = 2728935360. Its totient is φ = 183287808.

The previous prime is 730434227. The next prime is 730434241. The reversal of 730434240 is 42434037.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (730434241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 144394 + ... + 149366.

Almost surely, 2^730434240 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 730434240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1364467680).

730434240 is an abundant number, since it is smaller than the sum of its proper divisors (1998501120).

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

730434240 is a wasteful number, since it uses less digits than its factorization.

730434240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5016 (or 5000 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 27.

The square root of 730434240 is about 27026.5469492497. The cubic root of 730434240 is about 900.5898355755.

Adding to 730434240 its reverse (42434037), we get a palindrome (772868277).

The spelling of 730434240 in words is "seven hundred thirty million, four hundred thirty-four thousand, two hundred forty".