30040000 has 70 divisors (see below), whose sum is σ = 74588624. Its totient is φ = 12000000.

The previous prime is 30039983. The next prime is 30040009. The reversal of 30040000 is 4003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30040009) 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 9 ways as a sum of consecutive naturals, for example, 39625 + ... + 40375.

Almost surely, 2^30040000 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 30040000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37294312).

30040000 is an abundant number, since it is smaller than the sum of its proper divisors (44548624).

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

30040000 is an frugal number, since it uses more digits than its factorization.

30040000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783 (or 758 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 7.

The square root of 30040000 is about 5480.8758424179. The cubic root of 30040000 is about 310.8612884859.

Adding to 30040000 its reverse (4003), we get a palindrome (30044003).

The spelling of 30040000 in words is "thirty million, forty thousand", and thus it is an eban number.