30185372 has 36 divisors (see below), whose sum is σ = 61765200. Its totient is φ = 12907776.

The previous prime is 30185371. The next prime is 30185401. The reversal of 30185372 is 27358103.

It is a super-2 number, since 2×30185372² = 1822313365556768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30185371) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67004 + ... + 67452.

It is an arithmetic number, because the mean of its divisors is an integer number (1715700).

Almost surely, 2^30185372 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30185372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30882600).

30185372 is an abundant number, since it is smaller than the sum of its proper divisors (31579828).

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

30185372 is an frugal number, since it uses more digits than its factorization.

30185372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488 (or 458 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 30185372 is about 5494.1215858406. The cubic root of 30185372 is about 311.3619301418.

The spelling of 30185372 in words is "thirty million, one hundred eighty-five thousand, three hundred seventy-two".