30172898 has 8 divisors (see below), whose sum is σ = 51724992. Its totient is φ = 12931236.

The previous prime is 30172867. The next prime is 30172903. The reversal of 30172898 is 89827103.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1077590 + ... + 1077617.

It is an arithmetic number, because the mean of its divisors is an integer number (6465624).

Almost surely, 2^30172898 is an apocalyptic number.

30172898 is a deficient number, since it is larger than the sum of its proper divisors (21552094).

30172898 is a wasteful number, since it uses less digits than its factorization.

30172898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2155216.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 30172898 is about 5492.9862552167. The cubic root of 30172898 is about 311.3190344875.

The spelling of 30172898 in words is "thirty million, one hundred seventy-two thousand, eight hundred ninety-eight".