19481456 has 40 divisors (see below), whose sum is σ = 40600080. Its totient is φ = 9022464.

The previous prime is 19481447. The next prime is 19481467. The reversal of 19481456 is 65418491.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17690 + ... + 18758.

It is an arithmetic number, because the mean of its divisors is an integer number (1015002).

Almost surely, 2^19481456 is an apocalyptic number.

19481456 is a gapful number since it is divisible by the number (16) 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 19481456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20300040).

19481456 is an abundant number, since it is smaller than the sum of its proper divisors (21118624).

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

19481456 is a wasteful number, since it uses less digits than its factorization.

19481456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1161 (or 1155 counting only the distinct ones).

The product of its digits is 34560, while the sum is 38.

The square root of 19481456 is about 4413.7802392054. The cubic root of 19481456 is about 269.0752819245.

The spelling of 19481456 in words is "nineteen million, four hundred eighty-one thousand, four hundred fifty-six".