30205124 has 48 divisors (see below), whose sum is σ = 59194800. Its totient is φ = 13465088.

The previous prime is 30205103. The next prime is 30205139. The reversal of 30205124 is 42150203.

It can be written as a sum of positive squares in 8 ways, for example, as 937024 + 29268100 = 968^2 + 5410^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 569882 + ... + 569934.

It is an arithmetic number, because the mean of its divisors is an integer number (1233225).

Almost surely, 2^30205124 is an apocalyptic number.

30205124 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

30205124 is a deficient number, since it is larger than the sum of its proper divisors (28989676).

30205124 is a wasteful number, since it uses less digits than its factorization.

30205124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137 (or 101 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 30205124 is about 5495.9188494737. The cubic root of 30205124 is about 311.4298292541.

Adding to 30205124 its reverse (42150203), we get a palindrome (72355327).

The spelling of 30205124 in words is "thirty million, two hundred five thousand, one hundred twenty-four".