30145888 has 24 divisors (see below), whose sum is σ = 61266240. Its totient is φ = 14586240.

The previous prime is 30145883. The next prime is 30145889. The reversal of 30145888 is 88854103.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30145883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14203 + ... + 16186.

It is an arithmetic number, because the mean of its divisors is an integer number (2552760).

Almost surely, 2^30145888 is an apocalyptic number.

It is an amenable number.

30145888 is an abundant number, since it is smaller than the sum of its proper divisors (31120352).

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

30145888 is a wasteful number, since it uses less digits than its factorization.

30145888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30430 (or 30422 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 37.

The square root of 30145888 is about 5490.5271149499. The cubic root of 30145888 is about 311.2261118315.

The spelling of 30145888 in words is "thirty million, one hundred forty-five thousand, eight hundred eighty-eight".