20087308 has 6 divisors (see below), whose sum is σ = 35152796. Its totient is φ = 10043652.

The previous prime is 20087299. The next prime is 20087311. The reversal of 20087308 is 80378002.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2510910 + ... + 2510917.

Almost surely, 2^20087308 is an apocalyptic number.

It is an amenable number.

20087308 is a deficient number, since it is larger than the sum of its proper divisors (15065488).

20087308 is a wasteful number, since it uses less digits than its factorization.

20087308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5021831 (or 5021829 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 20087308 is about 4481.8866563089. The cubic root of 20087308 is about 271.8361722505.

It can be divided in two parts, 2008 and 7308, that added together give a triangular number (9316 = T₁₃₆).

The spelling of 20087308 in words is "twenty million, eighty-seven thousand, three hundred eight".