19928341 has 4 divisors (see below), whose sum is σ = 20104812. Its totient is φ = 19751872.

The previous prime is 19928339. The next prime is 19928347. The reversal of 19928341 is 14382991.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14382991 = 7 ⋅2054713.

It can be written as a sum of positive squares in 2 ways, for example, as 2739025 + 17189316 = 1655^2 + 4146^2 .

It is a cyclic number.

It is not a de Polignac number, because 19928341 - 2¹ = 19928339 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 19928341.

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, 88066 + ... + 88291.

It is an arithmetic number, because the mean of its divisors is an integer number (5026203).

Almost surely, 2^19928341 is an apocalyptic number.

It is an amenable number.

19928341 is a deficient number, since it is larger than the sum of its proper divisors (176471).

19928341 is a wasteful number, since it uses less digits than its factorization.

19928341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176470.

The product of its digits is 15552, while the sum is 37.

The square root of 19928341 is about 4464.1170459566. The cubic root of 19928341 is about 271.1171862845.

The spelling of 19928341 in words is "nineteen million, nine hundred twenty-eight thousand, three hundred forty-one".