20086408 has 8 divisors (see below), whose sum is σ = 37662030. Its totient is φ = 10043200.

The previous prime is 20086403. The next prime is 20086421. The reversal of 20086408 is 80468002.

It can be written as a sum of positive squares in only one way, i.e., 17960644 + 2125764 = 4238^2 + 1458^2 .

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 (20086403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1255393 + ... + 1255408.

Almost surely, 2^20086408 is an apocalyptic number.

It is an amenable number.

20086408 is a deficient number, since it is larger than the sum of its proper divisors (17575622).

20086408 is a wasteful number, since it uses less digits than its factorization.

20086408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2510807 (or 2510803 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 20086408 is about 4481.7862510388. The cubic root of 20086408 is about 271.8321123700.

The spelling of 20086408 in words is "twenty million, eighty-six thousand, four hundred eight".