16045405 has 8 divisors (see below), whose sum is σ = 20268000. Its totient is φ = 12160656.

The previous prime is 16045397. The next prime is 16045409. The reversal of 16045405 is 50454061.

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 16045405 - 2³ = 16045397 is a prime.

It is a super-2 number, since 2×16045405² = 514910043228050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16045405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16045409) 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, 84355 + ... + 84544.

It is an arithmetic number, because the mean of its divisors is an integer number (2533500).

Almost surely, 2^16045405 is an apocalyptic number.

It is an amenable number.

16045405 is a deficient number, since it is larger than the sum of its proper divisors (4222595).

16045405 is a wasteful number, since it uses less digits than its factorization.

16045405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168923.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 16045405 is about 4005.6716041133. The cubic root of 16045405 is about 252.2223461725. Note that the first 3 decimals are identical.

Adding to 16045405 its reverse (50454061), we get a palindrome (66499466).

It can be divided in two parts, 1 and 6045405, that added together give a palindrome (6045406).

The spelling of 16045405 in words is "sixteen million, forty-five thousand, four hundred five".