19288985 has 8 divisors (see below), whose sum is σ = 23170560. Its totient is φ = 15415344.

The previous prime is 19288963. The next prime is 19288991. The reversal of 19288985 is 58988291.

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 19288985 - 2⁶ = 19288921 is a prime.

It is a Curzon number.

It is a nialpdrome in base 11.

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, 7496 + ... + 9734.

It is an arithmetic number, because the mean of its divisors is an integer number (2896320).

Almost surely, 2^19288985 is an apocalyptic number.

It is an amenable number.

19288985 is a deficient number, since it is larger than the sum of its proper divisors (3881575).

19288985 is a wasteful number, since it uses less digits than its factorization.

19288985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3967.

The product of its digits is 414720, while the sum is 50.

The square root of 19288985 is about 4391.9226996840. The cubic root of 19288985 is about 268.1862196139.

The spelling of 19288985 in words is "nineteen million, two hundred eighty-eight thousand, nine hundred eighty-five".