30865130 has 16 divisors (see below), whose sum is σ = 56319624. Its totient is φ = 12176640.

The previous prime is 30865123. The next prime is 30865147. The reversal of 30865130 is 3156803.

It can be written as a sum of positive squares in 4 ways, for example, as 30459361 + 405769 = 5519^2 + 637^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 30865130.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20411 + ... + 21870.

Almost surely, 2^30865130 is an apocalyptic number.

30865130 is a deficient number, since it is larger than the sum of its proper divisors (25454494).

30865130 is a wasteful number, since it uses less digits than its factorization.

30865130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42361.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 30865130 is about 5555.6394771439. The cubic root of 30865130 is about 313.6818352153.

The spelling of 30865130 in words is "thirty million, eight hundred sixty-five thousand, one hundred thirty".