19448838 has 12 divisors (see below), whose sum is σ = 42139188. Its totient is φ = 6482940.

The previous prime is 19448789. The next prime is 19448839. The reversal of 19448838 is 83884491.

It is a nialpdrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 19448793 and 19448802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19448839) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 540228 + ... + 540263.

It is an arithmetic number, because the mean of its divisors is an integer number (3511599).

Almost surely, 2^19448838 is an apocalyptic number.

19448838 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

19448838 is an abundant number, since it is smaller than the sum of its proper divisors (22690350).

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

19448838 is a wasteful number, since it uses less digits than its factorization.

19448838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1080499 (or 1080496 counting only the distinct ones).

The product of its digits is 221184, while the sum is 45.

The square root of 19448838 is about 4410.0836726756. The cubic root of 19448838 is about 268.9250262076.

The spelling of 19448838 in words is "nineteen million, four hundred forty-eight thousand, eight hundred thirty-eight".