30840360 has 32 divisors (see below), whose sum is σ = 92521440. Its totient is φ = 8224064.

The previous prime is 30840353. The next prime is 30840361. The reversal of 30840360 is 6304803.

It is a super-2 number, since 2×30840360² = 1902255609859200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 30840360.

It is not an unprimeable number, because it can be changed into a prime (30840361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128382 + ... + 128621.

It is an arithmetic number, because the mean of its divisors is an integer number (2891295).

Almost surely, 2^30840360 is an apocalyptic number.

30840360 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30840360 is an abundant number, since it is smaller than the sum of its proper divisors (61681080).

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

30840360 is a wasteful number, since it uses less digits than its factorization.

30840360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257017 (or 257013 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 30840360 is about 5553.4097633796. The cubic root of 30840360 is about 313.5979003833.

The spelling of 30840360 in words is "thirty million, eight hundred forty thousand, three hundred sixty".