30251120 has 40 divisors (see below), whose sum is σ = 71498400. Its totient is φ = 11900160.

The previous prime is 30251119. The next prime is 30251131. The reversal of 30251120 is 2115203.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×30251120² = 1830260522508800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30251095 and 30251104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1781 + ... + 7979.

It is an arithmetic number, because the mean of its divisors is an integer number (1787460).

Almost surely, 2^30251120 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30251120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35749200).

30251120 is an abundant number, since it is smaller than the sum of its proper divisors (41247280).

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

30251120 is a wasteful number, since it uses less digits than its factorization.

30251120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6273 (or 6267 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 30251120 is about 5500.1018172394. The cubic root of 30251120 is about 311.5878296152.

Adding to 30251120 its reverse (2115203), we get a palindrome (32366323).

The spelling of 30251120 in words is "thirty million, two hundred fifty-one thousand, one hundred twenty".