30440970 has 96 divisors (see below), whose sum is σ = 91278720. Its totient is φ = 6894720.

The previous prime is 30440959. The next prime is 30440987. The reversal of 30440970 is 7904403.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 132816 + ... + 133044.

It is an arithmetic number, because the mean of its divisors is an integer number (950820).

Almost surely, 2^30440970 is an apocalyptic number.

30440970 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 30440970, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45639360).

30440970 is an abundant number, since it is smaller than the sum of its proper divisors (60837750).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30440970 is a wasteful number, since it uses less digits than its factorization.

30440970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460 (or 457 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 30440970 is about 5517.3335951345. Note that the first 3 decimals coincide. The cubic root of 30440970 is about 312.2382918228.

The spelling of 30440970 in words is "thirty million, four hundred forty thousand, nine hundred seventy".