730639436 has 24 divisors (see below), whose sum is σ = 1335183360. Its totient is φ = 349181712.

The previous prime is 730639417. The next prime is 730639439. The reversal of 730639436 is 634936037.

It is a junction number, because it is equal to n+sod(n) for n = 730639393 and 730639402.

It is not an unprimeable number, because it can be changed into a prime (730639439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 204215 + ... + 207761.

It is an arithmetic number, because the mean of its divisors is an integer number (55632640).

Almost surely, 2^730639436 is an apocalyptic number.

It is an amenable number.

730639436 is a deficient number, since it is larger than the sum of its proper divisors (604543924).

730639436 is a wasteful number, since it uses less digits than its factorization.

730639436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5813 (or 5811 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 41.

The square root of 730639436 is about 27030.3428761087. The cubic root of 730639436 is about 900.6741599038.

The spelling of 730639436 in words is "seven hundred thirty million, six hundred thirty-nine thousand, four hundred thirty-six".