30002740 has 24 divisors (see below), whose sum is σ = 63112392. Its totient is φ = 11980800.

The previous prime is 30002737. The next prime is 30002747. The reversal of 30002740 is 4720003.

It can be written as a sum of positive squares in 4 ways, for example, as 4822416 + 25180324 = 2196^2 + 5018^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30002747) 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 7 ways as a sum of consecutive naturals, for example, 17940 + ... + 19540.

It is an arithmetic number, because the mean of its divisors is an integer number (2629683).

Almost surely, 2^30002740 is an apocalyptic number.

It is an amenable number.

30002740 is an abundant number, since it is smaller than the sum of its proper divisors (33109652).

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

30002740 is a wasteful number, since it uses less digits than its factorization.

30002740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2547 (or 2545 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 16.

The square root of 30002740 is about 5477.4756959753. The cubic root of 30002740 is about 310.7327101041.

Adding to 30002740 its reverse (4720003), we get a palindrome (34722743).

The spelling of 30002740 in words is "thirty million, two thousand, seven hundred forty".