30000145 has 32 divisors (see below), whose sum is σ = 43718400. Its totient is φ = 19305216.

The previous prime is 30000137. The next prime is 30000149. The reversal of 30000145 is 54100003.

It is not a de Polignac number, because 30000145 - 2³ = 30000137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30000149) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 130891 + ... + 131119.

It is an arithmetic number, because the mean of its divisors is an integer number (1366200).

Almost surely, 2^30000145 is an apocalyptic number.

30000145 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

30000145 is a deficient number, since it is larger than the sum of its proper divisors (13718255).

30000145 is a wasteful number, since it uses less digits than its factorization.

30000145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457.

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 30000145 is about 5477.2388116641. The cubic root of 30000145 is about 310.7237512043.

Adding to 30000145 its reverse (54100003), we get a palindrome (84100148).

The spelling of 30000145 in words is "thirty million, one hundred forty-five", and thus it is an aban number.