730565220 has 192 divisors, whose sum is σ = 2633121792. Its totient is φ = 146880000.

The previous prime is 730565203. The next prime is 730565233. The reversal of 730565220 is 22565037.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 140670 + ... + 145770.

It is an arithmetic number, because the mean of its divisors is an integer number (13714176).

Almost surely, 2^730565220 is an apocalyptic number.

730565220 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 730565220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1316560896).

730565220 is an abundant number, since it is smaller than the sum of its proper divisors (1902556572).

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

730565220 is a wasteful number, since it uses less digits than its factorization.

730565220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5162 (or 5160 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 30.

The square root of 730565220 is about 27028.9700136724. The cubic root of 730565220 is about 900.6436630114.

The spelling of 730565220 in words is "seven hundred thirty million, five hundred sixty-five thousand, two hundred twenty".