30118040 has 64 divisors (see below), whose sum is σ = 74476800. Its totient is φ = 10910592.

The previous prime is 30118031. The next prime is 30118051. The reversal of 30118040 is 4081103.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 16619 + ... + 18341.

It is an arithmetic number, because the mean of its divisors is an integer number (1163700).

Almost surely, 2^30118040 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 30118040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37238400).

30118040 is an abundant number, since it is smaller than the sum of its proper divisors (44358760).

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

30118040 is a wasteful number, since it uses less digits than its factorization.

30118040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1776 (or 1772 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 30118040 is about 5487.9905247732. The cubic root of 30118040 is about 311.1302480670.

Adding to 30118040 its reverse (4081103), we get a palindrome (34199143).

The spelling of 30118040 in words is "thirty million, one hundred eighteen thousand, forty".