30981748 has 12 divisors (see below), whose sum is σ = 61963552. Its totient is φ = 13277880.

The previous prime is 30981737. The next prime is 30981749. The reversal of 30981748 is 84718903.

30981748 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 30981748.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30981749) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 553218 + ... + 553273.

Almost surely, 2^30981748 is an apocalyptic number.

It is an amenable number.

30981748 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

30981748 is a wasteful number, since it uses less digits than its factorization.

30981748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1106502 (or 1106500 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 30981748 is about 5566.1250435110. The cubic root of 30981748 is about 314.0764010068.

The spelling of 30981748 in words is "thirty million, nine hundred eighty-one thousand, seven hundred forty-eight".