30151840 has 48 divisors (see below), whose sum is σ = 73543680. Its totient is φ = 11669760.

The previous prime is 30151817. The next prime is 30151843. The reversal of 30151840 is 4815103.

It is not an unprimeable number, because it can be changed into a prime (30151843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1921 + ... + 7999.

It is an arithmetic number, because the mean of its divisors is an integer number (1532160).

Almost surely, 2^30151840 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 30151840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36771840).

30151840 is an abundant number, since it is smaller than the sum of its proper divisors (43391840).

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

30151840 is a wasteful number, since it uses less digits than its factorization.

30151840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6125 (or 6117 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 30151840 is about 5491.0691126592. The cubic root of 30151840 is about 311.2465932972.

Adding to 30151840 its reverse (4815103), we get a palindrome (34966943).

The spelling of 30151840 in words is "thirty million, one hundred fifty-one thousand, eight hundred forty".