30335240 has 32 divisors (see below), whose sum is σ = 73505880. Its totient is φ = 11200512.

The previous prime is 30335237. The next prime is 30335243. The reversal of 30335240 is 4253303.

It is an interprime number because it is at equal distance from previous prime (30335237) and next prime (30335243).

It can be written as a sum of positive squares in 4 ways, for example, as 27102436 + 3232804 = 5206^2 + 1798^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (30335243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28649 + ... + 29688.

Almost surely, 2^30335240 is an apocalyptic number.

It is an amenable number.

30335240 is an abundant number, since it is smaller than the sum of its proper divisors (43170640).

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

30335240 is a wasteful number, since it uses less digits than its factorization.

30335240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58361 (or 58357 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 20.

The square root of 30335240 is about 5507.7436396405. The cubic root of 30335240 is about 311.8763755239.

Adding to 30335240 its reverse (4253303), we get a palindrome (34588543).

The spelling of 30335240 in words is "thirty million, three hundred thirty-five thousand, two hundred forty".