19421832 has 16 divisors (see below), whose sum is σ = 48554640. Its totient is φ = 6473936.

The previous prime is 19421813. The next prime is 19421833. The reversal of 19421832 is 23812491.

It is a self number, because there is not a number n which added to its sum of digits gives 19421832.

It is not an unprimeable number, because it can be changed into a prime (19421833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 404598 + ... + 404645.

It is an arithmetic number, because the mean of its divisors is an integer number (3034665).

Almost surely, 2^19421832 is an apocalyptic number.

19421832 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19421832 is an abundant number, since it is smaller than the sum of its proper divisors (29132808).

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

19421832 is a wasteful number, since it uses less digits than its factorization.

19421832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 809252 (or 809248 counting only the distinct ones).

The product of its digits is 3456, while the sum is 30.

The square root of 19421832 is about 4407.0207623745. The cubic root of 19421832 is about 268.8004951451.

The spelling of 19421832 in words is "nineteen million, four hundred twenty-one thousand, eight hundred thirty-two".