30732540 has 48 divisors (see below), whose sum is σ = 86873472. Its totient is φ = 8117056.

The previous prime is 30732529. The next prime is 30732599. The reversal of 30732540 is 4523703.

It is a self number, because there is not a number n which added to its sum of digits gives 30732540.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4027 + ... + 8813.

It is an arithmetic number, because the mean of its divisors is an integer number (1809864).

Almost surely, 2^30732540 is an apocalyptic number.

30732540 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 30732540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43436736).

30732540 is an abundant number, since it is smaller than the sum of its proper divisors (56140932).

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

30732540 is a wasteful number, since it uses less digits than its factorization.

30732540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4906 (or 4904 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 24.

The square root of 30732540 is about 5543.6937144832. The cubic root of 30732540 is about 313.2320204618.

The spelling of 30732540 in words is "thirty million, seven hundred thirty-two thousand, five hundred forty".