19680245 has 16 divisors (see below), whose sum is σ = 25818240. Its totient is φ = 14313024.

The previous prime is 19680239. The next prime is 19680251. The reversal of 19680245 is 54208691.

It is an interprime number because it is at equal distance from previous prime (19680239) and next prime (19680251).

It is a cyclic number.

It is not a de Polignac number, because 19680245 - 2¹⁸ = 19418101 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2096 + ... + 6614.

It is an arithmetic number, because the mean of its divisors is an integer number (1613640).

Almost surely, 2^19680245 is an apocalyptic number.

It is an amenable number.

19680245 is a deficient number, since it is larger than the sum of its proper divisors (6137995).

19680245 is a wasteful number, since it uses less digits than its factorization.

19680245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4604.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 19680245 is about 4436.2422161104. The cubic root of 19680245 is about 269.9874022472.

The spelling of 19680245 in words is "nineteen million, six hundred eighty thousand, two hundred forty-five".