30538145 has 16 divisors (see below), whose sum is σ = 40165632. Its totient is φ = 22104960.

The previous prime is 30538141. The next prime is 30538147. The reversal of 30538145 is 54183503.

It is not a de Polignac number, because 30538145 - 2² = 30538141 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30538141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11624 + ... + 14006.

It is an arithmetic number, because the mean of its divisors is an integer number (2510352).

Almost surely, 2^30538145 is an apocalyptic number.

It is an amenable number.

30538145 is a deficient number, since it is larger than the sum of its proper divisors (9627487).

30538145 is a wasteful number, since it uses less digits than its factorization.

30538145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2632.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 30538145 is about 5526.1329155206. The cubic root of 30538145 is about 312.5701858355.

The spelling of 30538145 in words is "thirty million, five hundred thirty-eight thousand, one hundred forty-five".