730279836 has 144 divisors (see below), whose sum is σ = 2219817600. Its totient is φ = 199463040.

The previous prime is 730279819. The next prime is 730279859. The reversal of 730279836 is 638972037.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 730279791 and 730279800.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 219715 + ... + 223013.

It is an arithmetic number, because the mean of its divisors is an integer number (15415400).

Almost surely, 2^730279836 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 730279836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1109908800).

730279836 is an abundant number, since it is smaller than the sum of its proper divisors (1489537764).

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

730279836 is a wasteful number, since it uses less digits than its factorization.

730279836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3376 (or 3371 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 45.

The square root of 730279836 is about 27023.6902735359. The cubic root of 730279836 is about 900.5263735669.

The spelling of 730279836 in words is "seven hundred thirty million, two hundred seventy-nine thousand, eight hundred thirty-six".