19117008 has 30 divisors (see below), whose sum is σ = 53501474. Its totient is φ = 6372288.

The previous prime is 19116997. The next prime is 19117009. The reversal of 19117008 is 80071191.

It can be written as a sum of positive squares in only one way, i.e., 10188864 + 8928144 = 3192^2 + 2988^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19117009) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 66235 + ... + 66522.

Almost surely, 2^19117008 is an apocalyptic number.

19117008 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

19117008 is an abundant number, since it is smaller than the sum of its proper divisors (34384466).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19117008 is a wasteful number, since it uses less digits than its factorization.

19117008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132771 (or 132762 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 27.

The square root of 19117008 is about 4372.3000811930. The cubic root of 19117008 is about 267.3868062732.

Adding to 19117008 its reverse (80071191), we get a palindrome (99188199).

The spelling of 19117008 in words is "nineteen million, one hundred seventeen thousand, eight".