16378265 has 8 divisors (see below), whose sum is σ = 19689480. Its totient is φ = 13078912.

The previous prime is 16378253. The next prime is 16378267. The reversal of 16378265 is 56287361.

It can be written as a sum of positive squares in 4 ways, for example, as 1915456 + 14462809 = 1384^2 + 3803^2 .

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 16378265 - 2⁴ = 16378249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16378267) 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, 431 + ... + 5739.

It is an arithmetic number, because the mean of its divisors is an integer number (2461185).

Almost surely, 2^16378265 is an apocalyptic number.

It is an amenable number.

16378265 is a deficient number, since it is larger than the sum of its proper divisors (3311215).

16378265 is an equidigital number, since it uses as much as digits as its factorization.

16378265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5931.

The product of its digits is 60480, while the sum is 38.

The square root of 16378265 is about 4047.0069186993. The cubic root of 16378265 is about 253.9545302698.

The spelling of 16378265 in words is "sixteen million, three hundred seventy-eight thousand, two hundred sixty-five".