30660080 has 40 divisors (see below), whose sum is σ = 77767344. Its totient is φ = 11148800.

The previous prime is 30660079. The next prime is 30660083. The reversal of 30660080 is 8006603.

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 (30660083) 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, 16541 + ... + 18300.

Almost surely, 2^30660080 is an apocalyptic number.

It is an amenable number.

30660080 is an abundant number, since it is smaller than the sum of its proper divisors (47107264).

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

30660080 is a wasteful number, since it uses less digits than its factorization.

30660080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34865 (or 34859 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 30660080 is about 5537.1545038946. The cubic root of 30660080 is about 312.9856512661.

Adding to 30660080 its reverse (8006603), we get a palindrome (38666683).

The spelling of 30660080 in words is "thirty million, six hundred sixty thousand, eighty".