30407740 has 48 divisors (see below), whose sum is σ = 70489440. Its totient is φ = 10926080.

The previous prime is 30407723. The next prime is 30407753. The reversal of 30407740 is 4770403.

It is a happy number.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18804 + ... + 20356.

It is an arithmetic number, because the mean of its divisors is an integer number (1468530).

Almost surely, 2^30407740 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 30407740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35244720).

30407740 is an abundant number, since it is smaller than the sum of its proper divisors (40081700).

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

30407740 is a wasteful number, since it uses less digits than its factorization.

30407740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1662 (or 1660 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 25.

The square root of 30407740 is about 5514.3213544370. The cubic root of 30407740 is about 312.1246351712.

The spelling of 30407740 in words is "thirty million, four hundred seven thousand, seven hundred forty".