19927245 has 16 divisors (see below), whose sum is σ = 34336512. Its totient is φ = 9810240.

The previous prime is 19927241. The next prime is 19927253. The reversal of 19927245 is 54272991.

It is not a de Polignac number, because 19927245 - 2² = 19927241 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19927241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50901 + ... + 51290.

It is an arithmetic number, because the mean of its divisors is an integer number (2146032).

Almost surely, 2^19927245 is an apocalyptic number.

19927245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19927245 is a deficient number, since it is larger than the sum of its proper divisors (14409267).

19927245 is a wasteful number, since it uses less digits than its factorization.

19927245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102212.

The product of its digits is 45360, while the sum is 39.

The square root of 19927245 is about 4463.9942876308. The cubic root of 19927245 is about 271.1122159781.

The spelling of 19927245 in words is "nineteen million, nine hundred twenty-seven thousand, two hundred forty-five".