30123152 has 20 divisors (see below), whose sum is σ = 58457196. Its totient is φ = 15037440.

The previous prime is 30123139. The next prime is 30123157. The reversal of 30123152 is 25132103.

It can be written as a sum of positive squares in 2 ways, for example, as 3041536 + 27081616 = 1744^2 + 5204^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 30123152.

It is not an unprimeable number, because it can be changed into a prime (30123157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13028 + ... + 15164.

Almost surely, 2^30123152 is an apocalyptic number.

It is an amenable number.

30123152 is a deficient number, since it is larger than the sum of its proper divisors (28334044).

30123152 is a wasteful number, since it uses less digits than its factorization.

30123152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3026 (or 3020 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 30123152 is about 5488.4562492563. The cubic root of 30123152 is about 311.1478500075.

Adding to 30123152 its reverse (25132103), we get a palindrome (55255255).

The spelling of 30123152 in words is "thirty million, one hundred twenty-three thousand, one hundred fifty-two".