30305124 has 24 divisors (see below), whose sum is σ = 78569120. Its totient is φ = 10101672.

The previous prime is 30305069. The next prime is 30305129. The reversal of 30305124 is 42150303.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 30305097 and 30305106.

It is not an unprimeable number, because it can be changed into a prime (30305129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140194 + ... + 140409.

Almost surely, 2^30305124 is an apocalyptic number.

It is an amenable number.

30305124 is an abundant number, since it is smaller than the sum of its proper divisors (48263996).

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

30305124 is a wasteful number, since it uses less digits than its factorization.

30305124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280616 (or 280608 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 30305124 is about 5505.0089918183. The cubic root of 30305124 is about 311.7731338943.

Adding to 30305124 its reverse (42150303), we get a palindrome (72455427).

The spelling of 30305124 in words is "thirty million, three hundred five thousand, one hundred twenty-four".