16398745 has 8 divisors (see below), whose sum is σ = 21467520. Its totient is φ = 11926320.

The previous prime is 16398743. The next prime is 16398769. The reversal of 16398745 is 54789361.

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

It is not a de Polignac number, because 16398745 - 2¹ = 16398743 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16398743) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149025 + ... + 149134.

It is an arithmetic number, because the mean of its divisors is an integer number (2683440).

Almost surely, 2^16398745 is an apocalyptic number.

It is an amenable number.

16398745 is a deficient number, since it is larger than the sum of its proper divisors (5068775).

16398745 is a wasteful number, since it uses less digits than its factorization.

16398745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298175.

The product of its digits is 181440, while the sum is 43.

The square root of 16398745 is about 4049.5363932184. The cubic root of 16398745 is about 254.0603376197.

The spelling of 16398745 in words is "sixteen million, three hundred ninety-eight thousand, seven hundred forty-five".