30642152 has 8 divisors (see below), whose sum is σ = 57454050. Its totient is φ = 15321072.

The previous prime is 30642151. The next prime is 30642163. The reversal of 30642152 is 25124603.

It can be written as a sum of positive squares in only one way, i.e., 28665316 + 1976836 = 5354^2 + 1406^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-4 number, since 4×30642152⁴ (a number of 31 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (30642151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1915127 + ... + 1915142.

Almost surely, 2^30642152 is an apocalyptic number.

It is an amenable number.

30642152 is a deficient number, since it is larger than the sum of its proper divisors (26811898).

30642152 is a wasteful number, since it uses less digits than its factorization.

30642152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3830275 (or 3830271 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 30642152 is about 5535.5353851276. The cubic root of 30642152 is about 312.9246348913.

Adding to 30642152 its reverse (25124603), we get a palindrome (55766755).

The spelling of 30642152 in words is "thirty million, six hundred forty-two thousand, one hundred fifty-two".