19793856 has 28 divisors (see below), whose sum is σ = 52371752. Its totient is φ = 6597888.

The previous prime is 19793849. The next prime is 19793861. The reversal of 19793856 is 65839791.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

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, 51355 + ... + 51738.

Almost surely, 2^19793856 is an apocalyptic number.

19793856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

19793856 is an abundant number, since it is smaller than the sum of its proper divisors (32577896).

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

19793856 is a wasteful number, since it uses less digits than its factorization.

19793856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103108 (or 103098 counting only the distinct ones).

The product of its digits is 408240, while the sum is 48.

The square root of 19793856 is about 4449.0286580331. The cubic root of 19793856 is about 270.5059375060.

The spelling of 19793856 in words is "nineteen million, seven hundred ninety-three thousand, eight hundred fifty-six".