18880712 has 8 divisors (see below), whose sum is σ = 35401350. Its totient is φ = 9440352.

The previous prime is 18880691. The next prime is 18880717. The reversal of 18880712 is 21708881.

It can be written as a sum of positive squares in only one way, i.e., 10666756 + 8213956 = 3266^2 + 2866^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (18880717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1180037 + ... + 1180052.

Almost surely, 2^18880712 is an apocalyptic number.

It is an amenable number.

18880712 is a deficient number, since it is larger than the sum of its proper divisors (16520638).

18880712 is a wasteful number, since it uses less digits than its factorization.

18880712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2360095 (or 2360091 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 35.

The square root of 18880712 is about 4345.1941268486. The cubic root of 18880712 is about 266.2805564936.

The spelling of 18880712 in words is "eighteen million, eight hundred eighty thousand, seven hundred twelve".