19172068 has 24 divisors (see below), whose sum is σ = 34655544. Its totient is φ = 9273600.

The previous prime is 19172057. The next prime is 19172071. The reversal of 19172068 is 86027191.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6441444 + 12730624 = 2538^2 + 3568^2 .

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

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, 41358 + ... + 41818.

It is an arithmetic number, because the mean of its divisors is an integer number (1443981).

Almost surely, 2^19172068 is an apocalyptic number.

It is an amenable number.

19172068 is a deficient number, since it is larger than the sum of its proper divisors (15483476).

19172068 is a wasteful number, since it uses less digits than its factorization.

19172068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783 (or 781 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 34.

The square root of 19172068 is about 4378.5920111378. The cubic root of 19172068 is about 267.6432656161.

The spelling of 19172068 in words is "nineteen million, one hundred seventy-two thousand, sixty-eight".