19870068 has 24 divisors (see below), whose sum is σ = 48379968. Its totient is φ = 6335296.

The previous prime is 19870063. The next prime is 19870099. The reversal of 19870068 is 86007891.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19870061) by changing a digit.

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, 35721 + ... + 36272.

It is an arithmetic number, because the mean of its divisors is an integer number (2015832).

Almost surely, 2^19870068 is an apocalyptic number.

It is an amenable number.

19870068 is an abundant number, since it is smaller than the sum of its proper divisors (28509900).

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

19870068 is a wasteful number, since it uses less digits than its factorization.

19870068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72023 (or 72021 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 39.

The square root of 19870068 is about 4457.5854450588. The cubic root of 19870068 is about 270.8526679267.

The spelling of 19870068 in words is "nineteen million, eight hundred seventy thousand, sixty-eight".