30138258 has 16 divisors (see below), whose sum is σ = 60711840. Its totient is φ = 9973536.

The previous prime is 30138217. The next prime is 30138271. The reversal of 30138258 is 85283103.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17235 + ... + 18902.

It is an arithmetic number, because the mean of its divisors is an integer number (3794490).

Almost surely, 2^30138258 is an apocalyptic number.

30138258 is an abundant number, since it is smaller than the sum of its proper divisors (30573582).

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

30138258 is a wasteful number, since it uses less digits than its factorization.

30138258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36281.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 30138258 is about 5489.8322378739. The cubic root of 30138258 is about 311.1998522456.

The spelling of 30138258 in words is "thirty million, one hundred thirty-eight thousand, two hundred fifty-eight".