30040045 has 32 divisors (see below), whose sum is σ = 43776000. Its totient is φ = 19331136.

The previous prime is 30040013. The next prime is 30040057. The reversal of 30040045 is 54004003.

It is a cyclic number.

It is not a de Polignac number, because 30040045 - 2⁵ = 30040013 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 132222 + ... + 132448.

It is an arithmetic number, because the mean of its divisors is an integer number (1368000).

Almost surely, 2^30040045 is an apocalyptic number.

30040045 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

30040045 is a deficient number, since it is larger than the sum of its proper divisors (13735955).

30040045 is a wasteful number, since it uses less digits than its factorization.

30040045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457.

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 30040045 is about 5480.8799475997. The cubic root of 30040045 is about 310.8614437095.

Adding to 30040045 its reverse (54004003), we get a palindrome (84044048).

The spelling of 30040045 in words is "thirty million, forty thousand, forty-five".