30306740 has 24 divisors (see below), whose sum is σ = 65840040. Its totient is φ = 11704448.

The previous prime is 30306721. The next prime is 30306761. The reversal of 30306740 is 4760303.

It can be written as a sum of positive squares in 4 ways, for example, as 1705636 + 28601104 = 1306^2 + 5348^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25547 + ... + 26706.

It is an arithmetic number, because the mean of its divisors is an integer number (2743335).

Almost surely, 2^30306740 is an apocalyptic number.

It is an amenable number.

30306740 is an abundant number, since it is smaller than the sum of its proper divisors (35533300).

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

30306740 is a wasteful number, since it uses less digits than its factorization.

30306740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52291 (or 52289 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 23.

The square root of 30306740 is about 5505.1557652804. The cubic root of 30306740 is about 311.7786754921.

The spelling of 30306740 in words is "thirty million, three hundred six thousand, seven hundred forty".