30730580 has 24 divisors (see below), whose sum is σ = 65594760. Its totient is φ = 12090240.

The previous prime is 30730561. The next prime is 30730597. The reversal of 30730580 is 8503703.

It can be written as a sum of positive squares in 4 ways, for example, as 2999824 + 27730756 = 1732^2 + 5266^2 .

It is a super-3 number, since 3×30730580³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11375 + ... + 13814.

It is an arithmetic number, because the mean of its divisors is an integer number (2733115).

Almost surely, 2^30730580 is an apocalyptic number.

It is an amenable number.

30730580 is an abundant number, since it is smaller than the sum of its proper divisors (34864180).

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

30730580 is a wasteful number, since it uses less digits than its factorization.

30730580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25259 (or 25257 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 30730580 is about 5543.5169342215. The cubic root of 30730580 is about 313.2253614199.

The spelling of 30730580 in words is "thirty million, seven hundred thirty thousand, five hundred eighty".