30185187252 has 24 divisors (see below), whose sum is σ = 76835022432. Its totient is φ = 9147026400.

The previous prime is 30185187251. The next prime is 30185187259. The reversal of 30185187252 is 25278158103.

It is a super-2 number, since 2×30185187252² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30185187251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114337699 + ... + 114337962.

It is an arithmetic number, because the mean of its divisors is an integer number (3201459268).

Almost surely, 2^30185187252 is an apocalyptic number.

It is an amenable number.

30185187252 is an abundant number, since it is smaller than the sum of its proper divisors (46649835180).

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

30185187252 is a wasteful number, since it uses less digits than its factorization.

30185187252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228675679 (or 228675677 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 42.

The spelling of 30185187252 in words is "thirty billion, one hundred eighty-five million, one hundred eighty-seven thousand, two hundred fifty-two".