30308144 has 20 divisors (see below), whose sum is σ = 62176824. Its totient is φ = 14262528.

The previous prime is 30308137. The next prime is 30308147. The reversal of 30308144 is 44180303.

It is not an unprimeable number, because it can be changed into a prime (30308147) 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, 55442 + ... + 55985.

Almost surely, 2^30308144 is an apocalyptic number.

30308144 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

30308144 is an abundant number, since it is smaller than the sum of its proper divisors (31868680).

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

30308144 is a wasteful number, since it uses less digits than its factorization.

30308144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111452 (or 111446 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 30308144 is about 5505.2832806314. The cubic root of 30308144 is about 311.7834899382.

Adding to 30308144 its reverse (44180303), we get a palindrome (74488447).

The spelling of 30308144 in words is "thirty million, three hundred eight thousand, one hundred forty-four".