30011040 has 96 divisors (see below), whose sum is σ = 105053760. Its totient is φ = 8001792.

The previous prime is 30011029. The next prime is 30011041. The reversal of 30011040 is 4011003.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (30011041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 847 + ... + 7793.

It is an arithmetic number, because the mean of its divisors is an integer number (1094310).

Almost surely, 2^30011040 is an apocalyptic number.

30011040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30011040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52526880).

30011040 is an abundant number, since it is smaller than the sum of its proper divisors (75042720).

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

30011040 is a wasteful number, since it uses less digits than its factorization.

30011040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6971 (or 6957 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 30011040 is about 5478.2332918561. The cubic root of 30011040 is about 310.7613613063.

Adding to 30011040 its reverse (4011003), we get a palindrome (34022043).

The spelling of 30011040 in words is "thirty million, eleven thousand, forty".