30745480 has 48 divisors (see below), whose sum is σ = 72365580. Its totient is φ = 11755392.

The previous prime is 30745433. The next prime is 30745499. The reversal of 30745480 is 8454703.

It can be written as a sum of positive squares in 2 ways, for example, as 28965924 + 1779556 = 5382^2 + 1334^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20434 + ... + 21886.

Almost surely, 2^30745480 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 30745480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36182790).

30745480 is an abundant number, since it is smaller than the sum of its proper divisors (41620100).

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

30745480 is a wasteful number, since it uses less digits than its factorization.

30745480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1510 (or 1483 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 30745480 is about 5544.8606835519. The cubic root of 30745480 is about 313.2759766247.

The spelling of 30745480 in words is "thirty million, seven hundred forty-five thousand, four hundred eighty".