30440871 has 6 divisors (see below), whose sum is σ = 43970160. Its totient is φ = 20293908.

The previous prime is 30440867. The next prime is 30440881. The reversal of 30440871 is 17804403.

It is not a de Polignac number, because 30440871 - 2² = 30440867 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30440801) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1691151 + ... + 1691168.

It is an arithmetic number, because the mean of its divisors is an integer number (7328360).

Almost surely, 2^30440871 is an apocalyptic number.

30440871 is a deficient number, since it is larger than the sum of its proper divisors (13529289).

30440871 is a wasteful number, since it uses less digits than its factorization.

30440871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3382325 (or 3382322 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 30440871 is about 5517.3246234022. The cubic root of 30440871 is about 312.2379533357.

The spelling of 30440871 in words is "thirty million, four hundred forty thousand, eight hundred seventy-one".