30040536 has 32 divisors (see below), whose sum is σ = 76935600. Its totient is φ = 9768960.

The previous prime is 30040529. The next prime is 30040561. The reversal of 30040536 is 63504003.

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, 14281 + ... + 16248.

Almost surely, 2^30040536 is an apocalyptic number.

It is an amenable number.

30040536 is an abundant number, since it is smaller than the sum of its proper divisors (46895064).

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

30040536 is a wasteful number, since it uses less digits than its factorization.

30040536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30579 (or 30575 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 30040536 is about 5480.9247394942. The cubic root of 30040536 is about 310.8631373614.

Adding to 30040536 its reverse (63504003), we get a palindrome (93544539).

The spelling of 30040536 in words is "thirty million, forty thousand, five hundred thirty-six".