30000740 has 144 divisors (see below), whose sum is σ = 84115584. Its totient is φ = 8944320.

The previous prime is 30000721. The next prime is 30000749. The reversal of 30000740 is 4700003.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is not an unprimeable number, because it can be changed into a prime (30000749) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1304369 + ... + 1304391.

It is an arithmetic number, because the mean of its divisors is an integer number (584136).

Almost surely, 2^30000740 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 30000740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42057792).

30000740 is an abundant number, since it is smaller than the sum of its proper divisors (54114844).

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

30000740 is a wasteful number, since it uses less digits than its factorization.

30000740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79 (or 48 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 14.

The square root of 30000740 is about 5477.2931270839. The cubic root of 30000740 is about 310.7258054100.

Adding to 30000740 its reverse (4700003), we get a palindrome (34700743).

The spelling of 30000740 in words is "thirty million, seven hundred forty", and thus it is an aban number.