19672985 has 8 divisors (see below), whose sum is σ = 23680896. Its totient is φ = 15689520.

The previous prime is 19672979. The next prime is 19672993. The reversal of 19672985 is 58927691.

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

It is not a de Polignac number, because 19672985 - 2⁴ = 19672969 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4289 + ... + 7598.

It is an arithmetic number, because the mean of its divisors is an integer number (2960112).

Almost surely, 2^19672985 is an apocalyptic number.

It is an amenable number.

19672985 is a deficient number, since it is larger than the sum of its proper divisors (4007911).

19672985 is a wasteful number, since it uses less digits than its factorization.

19672985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12223.

The product of its digits is 272160, while the sum is 47.

The square root of 19672985 is about 4435.4238805327. The cubic root of 19672985 is about 269.9541989068.

The spelling of 19672985 in words is "nineteen million, six hundred seventy-two thousand, nine hundred eighty-five".