30982140 has 144 divisors (see below), whose sum is σ = 109304832. Its totient is φ = 6956928.

The previous prime is 30982123. The next prime is 30982163. The reversal of 30982140 is 4128903.

It is a congruent 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, 84237 + ... + 84603.

Almost surely, 2^30982140 is an apocalyptic number.

30982140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30982140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54652416).

30982140 is an abundant number, since it is smaller than the sum of its proper divisors (78322692).

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

30982140 is a wasteful number, since it uses less digits than its factorization.

30982140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456 (or 451 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 30982140 is about 5566.1602564066. The cubic root of 30982140 is about 314.0777256300.

The spelling of 30982140 in words is "thirty million, nine hundred eighty-two thousand, one hundred forty".