30440541 has 4 divisors (see below), whose sum is σ = 40587392. Its totient is φ = 20293692.

The previous prime is 30440513. The next prime is 30440609. The reversal of 30440541 is 14504403.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14504403 = 3 ⋅4834801.

It is not a de Polignac number, because 30440541 - 2⁹ = 30440029 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 (30440041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5073421 + ... + 5073426.

It is an arithmetic number, because the mean of its divisors is an integer number (10146848).

Almost surely, 2^30440541 is an apocalyptic number.

It is an amenable number.

30440541 is a deficient number, since it is larger than the sum of its proper divisors (10146851).

30440541 is a wasteful number, since it uses less digits than its factorization.

30440541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10146850.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 30440541 is about 5517.2947175223. The cubic root of 30440541 is about 312.2368250402.

Adding to 30440541 its reverse (14504403), we get a palindrome (44944944).

The spelling of 30440541 in words is "thirty million, four hundred forty thousand, five hundred forty-one".