730774640 has 40 divisors (see below), whose sum is σ = 1709505168. Its totient is φ = 290511360.

The previous prime is 730774633. The next prime is 730774643. The reversal of 730774640 is 46477037.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 730774594 and 730774603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (730774643) 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, 14981 + ... + 41060.

Almost surely, 2^730774640 is an apocalyptic number.

It is an amenable number.

730774640 is an abundant number, since it is smaller than the sum of its proper divisors (978730528).

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

730774640 is a wasteful number, since it uses less digits than its factorization.

730774640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56217 (or 56211 counting only the distinct ones).

The product of its (nonzero) digits is 98784, while the sum is 38.

The square root of 730774640 is about 27032.8437275844. The cubic root of 730774640 is about 900.7297127217.

The spelling of 730774640 in words is "seven hundred thirty million, seven hundred seventy-four thousand, six hundred forty".