30151240 has 64 divisors (see below), whose sum is σ = 78019200. Its totient is φ = 10272768.

The previous prime is 30151237. The next prime is 30151243. The reversal of 30151240 is 4215103.

It is an interprime number because it is at equal distance from previous prime (30151237) and next prime (30151243).

It is a super-3 number, since 3×30151240³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (30151243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71751 + ... + 72169.

It is an arithmetic number, because the mean of its divisors is an integer number (1219050).

Almost surely, 2^30151240 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 30151240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39009600).

30151240 is an abundant number, since it is smaller than the sum of its proper divisors (47867960).

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

30151240 is a wasteful number, since it uses less digits than its factorization.

30151240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694 (or 690 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 30151240 is about 5491.0144782180. The cubic root of 30151240 is about 311.2445287555.

Adding to 30151240 its reverse (4215103), we get a palindrome (34366343).

The spelling of 30151240 in words is "thirty million, one hundred fifty-one thousand, two hundred forty".