30840630 has 32 divisors (see below), whose sum is σ = 76572000. Its totient is φ = 7940352.

The previous prime is 30840619. The next prime is 30840661. The reversal of 30840630 is 3604803.

It is a super-2 number, since 2×30840630² = 1902288917593800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30840630.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16855 + ... + 18594.

It is an arithmetic number, because the mean of its divisors is an integer number (2392875).

Almost surely, 2^30840630 is an apocalyptic number.

30840630 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30840630 is an abundant number, since it is smaller than the sum of its proper divisors (45731370).

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

30840630 is a wasteful number, since it uses less digits than its factorization.

30840630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35488.

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

The square root of 30840630 is about 5553.4340727157. The cubic root of 30840630 is about 313.5988155390.

The spelling of 30840630 in words is "thirty million, eight hundred forty thousand, six hundred thirty".