730721480 has 32 divisors (see below), whose sum is σ = 1646258040. Its totient is φ = 291909120.

The previous prime is 730721461. The next prime is 730721527. The reversal of 730721480 is 84127037.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 571305604 + 159415876 = 23902^2 + 12626^2 .

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, 20420 + ... + 43340.

Almost surely, 2^730721480 is an apocalyptic number.

It is an amenable number.

730721480 is an abundant number, since it is smaller than the sum of its proper divisors (915536560).

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

730721480 is a wasteful number, since it uses less digits than its factorization.

730721480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23729 (or 23725 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 730721480 is about 27031.8604613149. The cubic root of 730721480 is about 900.7078710804.

The spelling of 730721480 in words is "seven hundred thirty million, seven hundred twenty-one thousand, four hundred eighty".