18880208 has 10 divisors (see below), whose sum is σ = 36580434. Its totient is φ = 9440096.

The previous prime is 18880207. The next prime is 18880219. The reversal of 18880208 is 80208881.

It can be written as a sum of positive squares in only one way, i.e., 17372224 + 1507984 = 4168^2 + 1228^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18880207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 589991 + ... + 590022.

Almost surely, 2^18880208 is an apocalyptic number.

It is an amenable number.

18880208 is a deficient number, since it is larger than the sum of its proper divisors (17700226).

18880208 is a wasteful number, since it uses less digits than its factorization.

18880208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1180021 (or 1180015 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 35.

The square root of 18880208 is about 4345.1361313542. The cubic root of 18880208 is about 266.2781871162.

The spelling of 18880208 in words is "eighteen million, eight hundred eighty thousand, two hundred eight".