20363908 has 6 divisors (see below), whose sum is σ = 35636846. Its totient is φ = 10181952.

The previous prime is 20363879. The next prime is 20363911. The reversal of 20363908 is 80936302.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 15382084 + 4981824 = 3922^2 + 2232^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20363908.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2545485 + ... + 2545492.

Almost surely, 2^20363908 is an apocalyptic number.

It is an amenable number.

20363908 is a deficient number, since it is larger than the sum of its proper divisors (15272938).

20363908 is a wasteful number, since it uses less digits than its factorization.

20363908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5090981 (or 5090979 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 20363908 is about 4512.6386959295. The cubic root of 20363908 is about 273.0782066502.

The spelling of 20363908 in words is "twenty million, three hundred sixty-three thousand, nine hundred eight".