19478112 has 48 divisors (see below), whose sum is σ = 51538032. Its totient is φ = 6440960.

The previous prime is 19478099. The next prime is 19478119. The reversal of 19478112 is 21187491.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19478119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12412 + ... + 13892.

It is an arithmetic number, because the mean of its divisors is an integer number (1073709).

Almost surely, 2^19478112 is an apocalyptic number.

19478112 is a gapful number since it is divisible by the number (12) 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 19478112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25769016).

19478112 is an abundant number, since it is smaller than the sum of its proper divisors (32059920).

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

19478112 is a wasteful number, since it uses less digits than its factorization.

19478112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1631 (or 1623 counting only the distinct ones).

The product of its digits is 4032, while the sum is 33.

The square root of 19478112 is about 4413.4014093440. The cubic root of 19478112 is about 269.0598854156.

The spelling of 19478112 in words is "nineteen million, four hundred seventy-eight thousand, one hundred twelve".