30000018 has 32 divisors (see below), whose sum is σ = 61399296. Its totient is φ = 9769808.

The previous prime is 30000001. The next prime is 30000023. The reversal of 30000018 is 81000003.

It is a junction number, because it is equal to n+sod(n) for n = 29999958 and 30000012.

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, 53005 + ... + 53567.

It is an arithmetic number, because the mean of its divisors is an integer number (1918728).

Almost surely, 2^30000018 is an apocalyptic number.

30000018 is an abundant number, since it is smaller than the sum of its proper divisors (31399278).

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

30000018 is a wasteful number, since it uses less digits than its factorization.

30000018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 758.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 30000018 is about 5477.2272182191. The cubic root of 30000018 is about 310.7233127400.

The spelling of 30000018 in words is "thirty million, eighteen", and thus it is an aban number and an uban number.