30686480 has 40 divisors (see below), whose sum is σ = 77834304. Its totient is φ = 11158400.

The previous prime is 30686471. The next prime is 30686489. The reversal of 30686480 is 8468603.

It is an interprime number because it is at equal distance from previous prime (30686471) and next prime (30686489).

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 30686480.

It is not an unprimeable number, because it can be changed into a prime (30686489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16556 + ... + 18315.

Almost surely, 2^30686480 is an apocalyptic number.

It is an amenable number.

30686480 is an abundant number, since it is smaller than the sum of its proper divisors (47147824).

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

30686480 is a wasteful number, since it uses less digits than its factorization.

30686480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34895 (or 34889 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 30686480 is about 5539.5378868638. The cubic root of 30686480 is about 313.0754580632.

The spelling of 30686480 in words is "thirty million, six hundred eighty-six thousand, four hundred eighty".