30745080 has 96 divisors (see below), whose sum is σ = 102407760. Its totient is φ = 7994880.

The previous prime is 30745073. The next prime is 30745081. The reversal of 30745080 is 8054703.

30745080 = 580² + 581² + ... + 659².

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30745081) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 13719 + ... + 15801.

Almost surely, 2^30745080 is an apocalyptic number.

30745080 is a gapful number since it is divisible by the number (30) 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 30745080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51203880).

30745080 is an abundant number, since it is smaller than the sum of its proper divisors (71662680).

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

30745080 is a wasteful number, since it uses less digits than its factorization.

30745080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2141 (or 2134 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 30745080 is about 5544.8246139982. The cubic root of 30745080 is about 313.2746180409.

Adding to 30745080 its reverse (8054703), we get a palindrome (38799783).

The spelling of 30745080 in words is "thirty million, seven hundred forty-five thousand, eighty".