30040755 has 16 divisors (see below), whose sum is σ = 49089024. Its totient is φ = 15680480.

The previous prime is 30040721. The next prime is 30040757. The reversal of 30040755 is 55704003.

It is not a de Polignac number, because 30040755 - 2¹⁶ = 29975219 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30040757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20601 + ... + 22010.

It is an arithmetic number, because the mean of its divisors is an integer number (3068064).

Almost surely, 2^30040755 is an apocalyptic number.

30040755 is a deficient number, since it is larger than the sum of its proper divisors (19048269).

30040755 is a wasteful number, since it uses less digits than its factorization.

30040755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42666.

The product of its (nonzero) digits is 2100, while the sum is 24.

The square root of 30040755 is about 5480.9447178383. The cubic root of 30040755 is about 310.8638927724.

Adding to 30040755 its reverse (55704003), we get a palindrome (85744758).

The spelling of 30040755 in words is "thirty million, forty thousand, seven hundred fifty-five".