30685074 has 96 divisors (see below), whose sum is σ = 76334400. Its totient is φ = 8184960.

The previous prime is 30685073. The next prime is 30685079. The reversal of 30685074 is 47058603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30685073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 503004 + ... + 503064.

It is an arithmetic number, because the mean of its divisors is an integer number (795150).

Almost surely, 2^30685074 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30685074, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38167200).

30685074 is an abundant number, since it is smaller than the sum of its proper divisors (45649326).

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

30685074 is a wasteful number, since it uses less digits than its factorization.

30685074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168 (or 161 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 30685074 is about 5539.4109795176. The cubic root of 30685074 is about 313.0706764697.

The spelling of 30685074 in words is "thirty million, six hundred eighty-five thousand, seventy-four".