30468138 has 32 divisors (see below), whose sum is σ = 62185536. Its totient is φ = 9950208.

The previous prime is 30468107. The next prime is 30468149. The reversal of 30468138 is 83186403.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 30468099 and 30468108.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95956 + ... + 96272.

It is an arithmetic number, because the mean of its divisors is an integer number (1943298).

Almost surely, 2^30468138 is an apocalyptic number.

30468138 is an abundant number, since it is smaller than the sum of its proper divisors (31717398).

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

30468138 is a wasteful number, since it uses less digits than its factorization.

30468138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 598.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 30468138 is about 5519.7951048929. The cubic root of 30468138 is about 312.3311531601.

The spelling of 30468138 in words is "thirty million, four hundred sixty-eight thousand, one hundred thirty-eight".