19928342 has 8 divisors (see below), whose sum is σ = 34162896. Its totient is φ = 8540712.

The previous prime is 19928339. The next prime is 19928347. The reversal of 19928342 is 24382991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×19928342³ (a number of 23 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 19928296 and 19928305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19928347) 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, 711713 + ... + 711740.

It is an arithmetic number, because the mean of its divisors is an integer number (4270362).

Almost surely, 2^19928342 is an apocalyptic number.

19928342 is a deficient number, since it is larger than the sum of its proper divisors (14234554).

19928342 is a wasteful number, since it uses less digits than its factorization.

19928342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1423462.

The product of its digits is 31104, while the sum is 38.

The square root of 19928342 is about 4464.1171579608. The cubic root of 19928342 is about 271.1171908194.

The spelling of 19928342 in words is "nineteen million, nine hundred twenty-eight thousand, three hundred forty-two".