30893680 has 40 divisors (see below), whose sum is σ = 72651600. Its totient is φ = 12215808.

The previous prime is 30893659. The next prime is 30893683. The reversal of 30893680 is 8639803.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30893683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4951 + ... + 9289.

It is an arithmetic number, because the mean of its divisors is an integer number (1816290).

Almost surely, 2^30893680 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30893680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36325800).

30893680 is an abundant number, since it is smaller than the sum of its proper divisors (41757920).

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

30893680 is a wasteful number, since it uses less digits than its factorization.

30893680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4441 (or 4435 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 30893680 is about 5558.2083444218. The cubic root of 30893680 is about 313.7785231446.

The spelling of 30893680 in words is "thirty million, eight hundred ninety-three thousand, six hundred eighty".