30040784 has 20 divisors (see below), whose sum is σ = 58599300. Its totient is φ = 14918400.

The previous prime is 30040763. The next prime is 30040799. The reversal of 30040784 is 48704003.

It can be written as a sum of positive squares in 2 ways, for example, as 6615184 + 23425600 = 2572^2 + 4840^2 .

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

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, 3917 + ... + 8684.

It is an arithmetic number, because the mean of its divisors is an integer number (2929965).

Almost surely, 2^30040784 is an apocalyptic number.

It is an amenable number.

30040784 is a deficient number, since it is larger than the sum of its proper divisors (28558516).

30040784 is a wasteful number, since it uses less digits than its factorization.

30040784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12758 (or 12752 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 30040784 is about 5480.9473633670. The cubic root of 30040784 is about 310.8639928038.

Adding to 30040784 its reverse (48704003), we get a palindrome (78744787).

The spelling of 30040784 in words is "thirty million, forty thousand, seven hundred eighty-four".