30040432 has 20 divisors (see below), whose sum is σ = 58289920. Its totient is φ = 14997888.

The previous prime is 30040429. The next prime is 30040441. The reversal of 30040432 is 23404003.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17233 + ... + 18895.

It is an arithmetic number, because the mean of its divisors is an integer number (2914496).

Almost surely, 2^30040432 is an apocalyptic number.

It is an amenable number.

30040432 is a deficient number, since it is larger than the sum of its proper divisors (28249488).

30040432 is a wasteful number, since it uses less digits than its factorization.

30040432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2800 (or 2794 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 30040432 is about 5480.9152520359. The cubic root of 30040432 is about 310.8627786260.

Adding to 30040432 its reverse (23404003), we get a palindrome (53444435).

The spelling of 30040432 in words is "thirty million, forty thousand, four hundred thirty-two".