730470208 has 42 divisors (see below), whose sum is σ = 1562696646. Its totient is φ = 336780288.

The previous prime is 730470157. The next prime is 730470211. The reversal of 730470208 is 802074037.

It can be written as a sum of positive squares in 3 ways, for example, as 88962624 + 641507584 = 9432^2 + 25328^2 .

It is a super-3 number, since 3×730470208³ (a number of 28 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 730470208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 779116 + ... + 780052.

It is an arithmetic number, because the mean of its divisors is an integer number (37207063).

Almost surely, 2^730470208 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 730470208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (781348323).

730470208 is an abundant number, since it is smaller than the sum of its proper divisors (832226438).

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

730470208 is an frugal number, since it uses more digits than its factorization.

730470208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1899 (or 952 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 730470208 is about 27027.2123608781. The cubic root of 730470208 is about 900.6046175969.

The spelling of 730470208 in words is "seven hundred thirty million, four hundred seventy thousand, two hundred eight".