30440741 has 4 divisors (see below), whose sum is σ = 30573900. Its totient is φ = 30307584.

The previous prime is 30440719. The next prime is 30440743. The reversal of 30440741 is 14704403.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14704403 = 7 ⋅2100629.

It can be written as a sum of positive squares in 2 ways, for example, as 25908100 + 4532641 = 5090^2 + 2129^2 .

It is a cyclic number.

It is not a de Polignac number, because 30440741 - 2¹⁸ = 30178597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30440743) 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 3 ways as a sum of consecutive naturals, for example, 66236 + ... + 66693.

It is an arithmetic number, because the mean of its divisors is an integer number (7643475).

Almost surely, 2^30440741 is an apocalyptic number.

It is an amenable number.

30440741 is a deficient number, since it is larger than the sum of its proper divisors (133159).

30440741 is a wasteful number, since it uses less digits than its factorization.

30440741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133158.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 30440741 is about 5517.3128423174. The cubic root of 30440741 is about 312.2375088566.

The spelling of 30440741 in words is "thirty million, four hundred forty thousand, seven hundred forty-one".