730787840 has 104 divisors (see below), whose sum is σ = 1857718800. Its totient is φ = 274989056.

The previous prime is 730787839. The next prime is 730787867. The reversal of 730787840 is 48787037.

It is a junction number, because it is equal to n+sod(n) for n = 730787791 and 730787800.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 347111 + ... + 349209.

Almost surely, 2^730787840 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 730787840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (928859400).

730787840 is an abundant number, since it is smaller than the sum of its proper divisors (1126930960).

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

730787840 is a wasteful number, since it uses less digits than its factorization.

730787840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2145 (or 2123 counting only the distinct ones).

The product of its (nonzero) digits is 263424, while the sum is 44.

The square root of 730787840 is about 27033.0878739370. The cubic root of 730787840 is about 900.7351359899.

The spelling of 730787840 in words is "seven hundred thirty million, seven hundred eighty-seven thousand, eight hundred forty".