19864496 has 20 divisors (see below), whose sum is σ = 38831592. Its totient is φ = 9843456.

The previous prime is 19864463. The next prime is 19864499. The reversal of 19864496 is 69446891.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 19864496.

It is not an unprimeable number, because it can be changed into a prime (19864499) 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 3 ways as a sum of consecutive naturals, for example, 3686 + ... + 7301.

Almost surely, 2^19864496 is an apocalyptic number.

19864496 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

19864496 is a deficient number, since it is larger than the sum of its proper divisors (18967096).

19864496 is a wasteful number, since it uses less digits than its factorization.

19864496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11108 (or 11102 counting only the distinct ones).

The product of its digits is 373248, while the sum is 47.

The square root of 19864496 is about 4456.9603991958. The cubic root of 19864496 is about 270.8273478967.

The spelling of 19864496 in words is "nineteen million, eight hundred sixty-four thousand, four hundred ninety-six".