30206740 has 12 divisors (see below), whose sum is σ = 63434196. Its totient is φ = 12082688.

The previous prime is 30206731. The next prime is 30206747. The reversal of 30206740 is 4760203.

It can be written as a sum of positive squares in 2 ways, for example, as 13527684 + 16679056 = 3678^2 + 4084^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30206747) 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 3 ways as a sum of consecutive naturals, for example, 755149 + ... + 755188.

It is an arithmetic number, because the mean of its divisors is an integer number (5286183).

Almost surely, 2^30206740 is an apocalyptic number.

It is an amenable number.

30206740 is an abundant number, since it is smaller than the sum of its proper divisors (33227456).

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

30206740 is a wasteful number, since it uses less digits than its factorization.

30206740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1510346 (or 1510344 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 30206740 is about 5496.0658656897. The cubic root of 30206740 is about 311.4353830759.

Adding to 30206740 its reverse (4760203), we get a palindrome (34966943).

The spelling of 30206740 in words is "thirty million, two hundred six thousand, seven hundred forty".