30151128 has 32 divisors (see below), whose sum is σ = 86146560. Its totient is φ = 8614560.

The previous prime is 30151123. The next prime is 30151129. The reversal of 30151128 is 82115103.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30151123) 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 7 ways as a sum of consecutive naturals, for example, 89568 + ... + 89903.

It is an arithmetic number, because the mean of its divisors is an integer number (2692080).

Almost surely, 2^30151128 is an apocalyptic number.

It is an amenable number.

30151128 is an abundant number, since it is smaller than the sum of its proper divisors (55995432).

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

30151128 is a wasteful number, since it uses less digits than its factorization.

30151128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179487 (or 179483 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 30151128 is about 5491.0042797288. The cubic root of 30151128 is about 311.2441433714.

The spelling of 30151128 in words is "thirty million, one hundred fifty-one thousand, one hundred twenty-eight".