30502040 has 32 divisors (see below), whose sum is σ = 69165360. Its totient is φ = 12105600.

The previous prime is 30502019. The next prime is 30502051. The reversal of 30502040 is 4020503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2330 + ... + 8150.

Almost surely, 2^30502040 is an apocalyptic number.

It is an amenable number.

30502040 is an abundant number, since it is smaller than the sum of its proper divisors (38663320).

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

30502040 is a wasteful number, since it uses less digits than its factorization.

30502040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5963 (or 5959 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 14.

The square root of 30502040 is about 5522.8651984274. The cubic root of 30502040 is about 312.4469541962.

Adding to 30502040 its reverse (4020503), we get a palindrome (34522543).

The spelling of 30502040 in words is "thirty million, five hundred two thousand, forty".