19842432 has 32 divisors (see below), whose sum is σ = 52707480. Its totient is φ = 6614016.

The previous prime is 19842391. The next prime is 19842443. The reversal of 19842432 is 23424891.

It is a tau number, because it is divible by the number of its divisors (32).

It is a junction number, because it is equal to n+sod(n) for n = 19842393 and 19842402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25453 + ... + 26220.

Almost surely, 2^19842432 is an apocalyptic number.

19842432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19842432 is an abundant number, since it is smaller than the sum of its proper divisors (32865048).

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

19842432 is an equidigital number, since it uses as much as digits as its factorization.

19842432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51690 (or 51678 counting only the distinct ones).

The product of its digits is 13824, while the sum is 33.

The square root of 19842432 is about 4454.4844819575. The cubic root of 19842432 is about 270.7270391454.

The spelling of 19842432 in words is "nineteen million, eight hundred forty-two thousand, four hundred thirty-two".