30753040 has 40 divisors (see below), whose sum is σ = 73031040. Its totient is φ = 12038016.

The previous prime is 30752989. The next prime is 30753043. The reversal of 30753040 is 4035703.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (30753043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 330 + ... + 7849.

It is an arithmetic number, because the mean of its divisors is an integer number (1825776).

Almost surely, 2^30753040 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 30753040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36515520).

30753040 is an abundant number, since it is smaller than the sum of its proper divisors (42278000).

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

30753040 is a wasteful number, since it uses less digits than its factorization.

30753040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8239 (or 8233 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 22.

The square root of 30753040 is about 5545.5423539993. The cubic root of 30753040 is about 313.3016516431.

Adding to 30753040 its reverse (4035703), we get a palindrome (34788743).

The spelling of 30753040 in words is "thirty million, seven hundred fifty-three thousand, forty".