19968354 has 72 divisors (see below), whose sum is σ = 52303680. Its totient is φ = 5392656.

The previous prime is 19968349. The next prime is 19968379. The reversal of 19968354 is 45386991.

It is a happy number.

It is a super-2 number, since 2×19968354² = 797470322938632, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 45267 + ... + 45705.

It is an arithmetic number, because the mean of its divisors is an integer number (726440).

Almost surely, 2^19968354 is an apocalyptic number.

19968354 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 19968354, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26151840).

19968354 is an abundant number, since it is smaller than the sum of its proper divisors (32335326).

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

19968354 is a wasteful number, since it uses less digits than its factorization.

19968354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492 (or 470 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 19968354 is about 4468.5964239345. The cubic root of 19968354 is about 271.2985186486.

The spelling of 19968354 in words is "nineteen million, nine hundred sixty-eight thousand, three hundred fifty-four".