30030040 has 32 divisors (see below), whose sum is σ = 69219360. Its totient is φ = 11718400.

The previous prime is 30030037. The next prime is 30030043. The reversal of 30030040 is 4003003.

It is an interprime number because it is at equal distance from previous prime (30030037) and next prime (30030043).

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 30029999 and 30030026.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30030043) 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, 7516 + ... + 10795.

It is an arithmetic number, because the mean of its divisors is an integer number (2163105).

Almost surely, 2^30030040 is an apocalyptic number.

It is an amenable number.

30030040 is an abundant number, since it is smaller than the sum of its proper divisors (39189320).

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

30030040 is a wasteful number, since it uses less digits than its factorization.

30030040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18363 (or 18359 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 10.

The square root of 30030040 is about 5479.9671531862. The cubic root of 30030040 is about 310.8269285138.

Adding to 30030040 its reverse (4003003), we get a palindrome (34033043).

The spelling of 30030040 in words is "thirty million, thirty thousand, forty", and thus it is an eban number.