30240881 has 16 divisors (see below), whose sum is σ = 34871040. Its totient is φ = 25966080.

The previous prime is 30240857. The next prime is 30240887. The reversal of 30240881 is 18804203.

It is a cyclic number.

It is not a de Polignac number, because 30240881 - 2¹⁸ = 29978737 is a prime.

It is a super-2 number, since 2×30240881² = 1829021767312322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30240881.

It is not an unprimeable number, because it can be changed into a prime (30240887) 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, 13985 + ... + 16001.

It is an arithmetic number, because the mean of its divisors is an integer number (2179440).

Almost surely, 2^30240881 is an apocalyptic number.

It is an amenable number.

30240881 is a deficient number, since it is larger than the sum of its proper divisors (4630159).

30240881 is a wasteful number, since it uses less digits than its factorization.

30240881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2104.

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 30240881 is about 5499.1709375141. The cubic root of 30240881 is about 311.5526716024.

The spelling of 30240881 in words is "thirty million, two hundred forty thousand, eight hundred eighty-one".