730045440 has 176 divisors, whose sum is σ = 2594940960. Its totient is φ = 194641920.

The previous prime is 730045429. The next prime is 730045451. The reversal of 730045440 is 44540037.

It is an interprime number because it is at equal distance from previous prime (730045429) and next prime (730045451).

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135600 + ... + 140880.

Almost surely, 2^730045440 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 730045440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1297470480).

730045440 is an abundant number, since it is smaller than the sum of its proper divisors (1864895520).

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

730045440 is a wasteful number, since it uses less digits than its factorization.

730045440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5315 (or 5291 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 730045440 is about 27019.3530640539. The cubic root of 730045440 is about 900.4300167291.

Adding to 730045440 its reverse (44540037), we get a palindrome (774585477).

The spelling of 730045440 in words is "seven hundred thirty million, forty-five thousand, four hundred forty".