19421136 has 60 divisors (see below), whose sum is σ = 62120032. Its totient is φ = 5548608.

The previous prime is 19421113. The next prime is 19421141. The reversal of 19421136 is 63112491.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8626 + ... + 10641.

Almost surely, 2^19421136 is an apocalyptic number.

19421136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

19421136 is an abundant number, since it is smaller than the sum of its proper divisors (42698896).

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

19421136 is a wasteful number, since it uses less digits than its factorization.

19421136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19288 (or 19279 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 19421136 is about 4406.9417967566. The cubic root of 19421136 is about 268.7972841988.

The spelling of 19421136 in words is "nineteen million, four hundred twenty-one thousand, one hundred thirty-six".