20008355 has 8 divisors (see below), whose sum is σ = 24183600. Its totient is φ = 15890976.

The previous prime is 20008343. The next prime is 20008381. The reversal of 20008355 is 55380002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20008355 - 2⁶ = 20008291 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20008355.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13700 + ... + 15089.

It is an arithmetic number, because the mean of its divisors is an integer number (3022950).

Almost surely, 2^20008355 is an apocalyptic number.

20008355 is a deficient number, since it is larger than the sum of its proper divisors (4175245).

20008355 is a wasteful number, since it uses less digits than its factorization.

20008355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28933.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 20008355 is about 4473.0699748607. The cubic root of 20008355 is about 271.4795546626.

Adding to 20008355 its reverse (55380002), we get a palindrome (75388357).

The spelling of 20008355 in words is "twenty million, eight thousand, three hundred fifty-five".