19738368 has 108 divisors (see below), whose sum is σ = 61381320. Its totient is φ = 6064128.

The previous prime is 19738363. The next prime is 19738373. The reversal of 19738368 is 86383791.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (19738363) and next prime (19738373).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19738363) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29623 + ... + 30281.

Almost surely, 2^19738368 is an apocalyptic number.

19738368 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19738368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30690660).

19738368 is an abundant number, since it is smaller than the sum of its proper divisors (41642952).

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

19738368 is a wasteful number, since it uses less digits than its factorization.

19738368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694 (or 677 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 19738368 is about 4442.7883136607. The cubic root of 19738368 is about 270.2529317079.

The spelling of 19738368 in words is "nineteen million, seven hundred thirty-eight thousand, three hundred sixty-eight".