30106840 has 32 divisors (see below), whose sum is σ = 68700960. Its totient is φ = 11872000.

The previous prime is 30106829. The next prime is 30106861. The reversal of 30106840 is 4860103.

It is a congruent number.

It is an unprimeable number.

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, 2461 + ... + 8140.

It is an arithmetic number, because the mean of its divisors is an integer number (2146905).

Almost surely, 2^30106840 is an apocalyptic number.

It is an amenable number.

30106840 is an abundant number, since it is smaller than the sum of its proper divisors (38594120).

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

30106840 is a wasteful number, since it uses less digits than its factorization.

30106840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10683 (or 10679 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 30106840 is about 5486.9700199655. The cubic root of 30106840 is about 311.0916766016.

Adding to 30106840 its reverse (4860103), we get a palindrome (34966943).

The spelling of 30106840 in words is "thirty million, one hundred six thousand, eight hundred forty".