730280772 has 90 divisors (see below), whose sum is σ = 2067403338. Its totient is φ = 224684928.

The previous prime is 730280753. The next prime is 730280777. The reversal of 730280772 is 277082037.

It can be written as a sum of positive squares in 3 ways, for example, as 9036036 + 721244736 = 3006^2 + 26856^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (730280777) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 48088 + ... + 61424.

Almost surely, 2^730280772 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 730280772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1033701669).

730280772 is an abundant number, since it is smaller than the sum of its proper divisors (1337122566).

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

730280772 is a wasteful number, since it uses less digits than its factorization.

730280772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13379 (or 13355 counting only the distinct ones).

The product of its (nonzero) digits is 32928, while the sum is 36.

The square root of 730280772 is about 27023.7075916685. The cubic root of 730280772 is about 900.5267583017.

The spelling of 730280772 in words is "seven hundred thirty million, two hundred eighty thousand, seven hundred seventy-two".