30000156 has 24 divisors (see below), whose sum is σ = 70089600. Its totient is φ = 9987312.

The previous prime is 30000149. The next prime is 30000163. The reversal of 30000156 is 65100003.

It is an interprime number because it is at equal distance from previous prime (30000149) and next prime (30000163).

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 7 ways as a sum of consecutive naturals, for example, 15895 + ... + 17681.

It is an arithmetic number, because the mean of its divisors is an integer number (2920400).

Almost surely, 2^30000156 is an apocalyptic number.

It is an amenable number.

30000156 is an abundant number, since it is smaller than the sum of its proper divisors (40089444).

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

30000156 is a wasteful number, since it uses less digits than its factorization.

30000156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3193 (or 3191 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 15.

The square root of 30000156 is about 5477.2398158196. The cubic root of 30000156 is about 310.7237891814.

Adding to 30000156 its reverse (65100003), we get a palindrome (95100159).

The spelling of 30000156 in words is "thirty million, one hundred fifty-six", and thus it is an aban number.