19421248 has 84 divisors (see below), whose sum is σ = 48993552. Its totient is φ = 7553280.

The previous prime is 19421239. The next prime is 19421323. The reversal of 19421248 is 84212491.

It is a nialpdrome in base 11.

It is a zygodrome in base 3.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34215 + ... + 34777.

Almost surely, 2^19421248 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19421248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24496776).

19421248 is an abundant number, since it is smaller than the sum of its proper divisors (29572304).

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

19421248 is a wasteful number, since it uses less digits than its factorization.

19421248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600 (or 583 counting only the distinct ones).

The product of its digits is 4608, while the sum is 31.

The square root of 19421248 is about 4406.9545039630. The cubic root of 19421248 is about 268.7978009079.

It can be divided in two parts, 1 and 9421248, that added together give a palindrome (9421249).

The spelling of 19421248 in words is "nineteen million, four hundred twenty-one thousand, two hundred forty-eight".