730489949640 has 768 divisors, whose sum is σ = 2791290378240. Its totient is φ = 170263296000.

The previous prime is 730489949621. The next prime is 730489949671. The reversal of 730489949640 is 46949984037.

730489949640 is a `hidden beast` number, since 7 + 3 + 0 + 489 + 94 + 9 + 64 + 0 = 666.

It is a super-2 number, since 2×730489949640² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 311242947 + ... + 311245293.

It is an arithmetic number, because the mean of its divisors is an integer number (3634492680).

Almost surely, 2^730489949640 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 730489949640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1395645189120).

730489949640 is an abundant number, since it is smaller than the sum of its proper divisors (2060800428600).

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

730489949640 is a wasteful number, since it uses less digits than its factorization.

730489949640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2496 (or 2480 counting only the distinct ones).

The product of its (nonzero) digits is 47029248, while the sum is 63.

The spelling of 730489949640 in words is "seven hundred thirty billion, four hundred eighty-nine million, nine hundred forty-nine thousand, six hundred forty".