19870796 has 12 divisors (see below), whose sum is σ = 37935240. Its totient is φ = 9032160.

The previous prime is 19870777. The next prime is 19870831. The reversal of 19870796 is 69707891.

It is a self number, because there is not a number n which added to its sum of digits gives 19870796.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 225761 + ... + 225848.

It is an arithmetic number, because the mean of its divisors is an integer number (3161270).

Almost surely, 2^19870796 is an apocalyptic number.

It is an amenable number.

19870796 is a deficient number, since it is larger than the sum of its proper divisors (18064444).

19870796 is a wasteful number, since it uses less digits than its factorization.

19870796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451624 (or 451622 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 47.

The square root of 19870796 is about 4457.6671028689. The cubic root of 19870796 is about 270.8559757217.

The spelling of 19870796 in words is "nineteen million, eight hundred seventy thousand, seven hundred ninety-six".