30565140 has 48 divisors (see below), whose sum is σ = 85905792. Its totient is φ = 8119936.

The previous prime is 30565123. The next prime is 30565151. The reversal of 30565140 is 4156503.

30565140 is nontrivially palindromic in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 30565140.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 18217 + ... + 19823.

It is an arithmetic number, because the mean of its divisors is an integer number (1789704).

Almost surely, 2^30565140 is an apocalyptic number.

30565140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30565140 is an abundant number, since it is smaller than the sum of its proper divisors (55340652).

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

30565140 is a wasteful number, since it uses less digits than its factorization.

30565140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1936 (or 1934 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 30565140 is about 5528.5748615715. The cubic root of 30565140 is about 312.6622602679.

The spelling of 30565140 in words is "thirty million, five hundred sixty-five thousand, one hundred forty".