30151120 has 20 divisors (see below), whose sum is σ = 70101540. Its totient is φ = 12060416.

The previous prime is 30151067. The next prime is 30151123. The reversal of 30151120 is 2115103.

It can be written as a sum of positive squares in 2 ways, for example, as 20466576 + 9684544 = 4524^2 + 3112^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 30151120.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 188365 + ... + 188524.

It is an arithmetic number, because the mean of its divisors is an integer number (3505077).

Almost surely, 2^30151120 is an apocalyptic number.

It is an amenable number.

30151120 is an abundant number, since it is smaller than the sum of its proper divisors (39950420).

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

30151120 is a wasteful number, since it uses less digits than its factorization.

30151120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376902 (or 376896 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 13.

The square root of 30151120 is about 5491.0035512646. The cubic root of 30151120 is about 311.2441158439.

Adding to 30151120 its reverse (2115103), we get a palindrome (32266223).

The spelling of 30151120 in words is "thirty million, one hundred fifty-one thousand, one hundred twenty".