19072245 has 8 divisors (see below), whose sum is σ = 30515616. Its totient is φ = 10171856.

The previous prime is 19072243. The next prime is 19072289. The reversal of 19072245 is 54227091.

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

It is a cyclic number.

It is not a de Polignac number, because 19072245 - 2¹ = 19072243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19072243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 635727 + ... + 635756.

It is an arithmetic number, because the mean of its divisors is an integer number (3814452).

Almost surely, 2^19072245 is an apocalyptic number.

19072245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19072245 is a deficient number, since it is larger than the sum of its proper divisors (11443371).

19072245 is a wasteful number, since it uses less digits than its factorization.

19072245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1271491.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 19072245 is about 4367.1781507056. The cubic root of 19072245 is about 267.1779453168.

The spelling of 19072245 in words is "nineteen million, seventy-two thousand, two hundred forty-five".