30678123898 has 8 divisors (see below), whose sum is σ = 46035801108. Its totient is φ = 15332856864.

The previous prime is 30678123811. The next prime is 30678123911. The reversal of 30678123898 is 89832187603.

It can be written as a sum of positive squares in 2 ways, for example, as 29947340809 + 730783089 = 173053^2 + 27033^2 .

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

It is a super-2 number, since 2×30678123898² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3096361 + ... + 3106252.

Almost surely, 2^30678123898 is an apocalyptic number.

30678123898 is a deficient number, since it is larger than the sum of its proper divisors (15357677210).

30678123898 is a wasteful number, since it uses less digits than its factorization.

30678123898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6205088.

The product of its (nonzero) digits is 3483648, while the sum is 55.

The spelling of 30678123898 in words is "thirty billion, six hundred seventy-eight million, one hundred twenty-three thousand, eight hundred ninety-eight".