19996454 has 8 divisors (see below), whose sum is σ = 31759128. Its totient is φ = 9410080.

The previous prime is 19996451. The next prime is 19996463. The reversal of 19996454 is 45469991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 19996399 and 19996408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19996451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 294032 + ... + 294099.

It is an arithmetic number, because the mean of its divisors is an integer number (3969891).

Almost surely, 2^19996454 is an apocalyptic number.

19996454 is a deficient number, since it is larger than the sum of its proper divisors (11762674).

19996454 is a wasteful number, since it uses less digits than its factorization.

19996454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 588150.

The product of its digits is 349920, while the sum is 47.

The square root of 19996454 is about 4471.7394825727. The cubic root of 19996454 is about 271.4257185032.

The spelling of 19996454 in words is "nineteen million, nine hundred ninety-six thousand, four hundred fifty-four".