30185397228 has 48 divisors (see below), whose sum is σ = 80503453184. Its totient is φ = 8623428480.

The previous prime is 30185397173. The next prime is 30185397343. The reversal of 30185397228 is 82279358103.

It is a happy number.

It is a super-2 number, since 2×30185397228² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1093233 + ... + 1120503.

Almost surely, 2^30185397228 is an apocalyptic number.

It is an amenable number.

30185397228 is an abundant number, since it is smaller than the sum of its proper divisors (50318055956).

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

30185397228 is a wasteful number, since it uses less digits than its factorization.

30185397228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40462 (or 40460 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 48.

The spelling of 30185397228 in words is "thirty billion, one hundred eighty-five million, three hundred ninety-seven thousand, two hundred twenty-eight".