16390045 has 16 divisors (see below), whose sum is σ = 22544640. Its totient is φ = 11205504.

The previous prime is 16390043. The next prime is 16390061. The reversal of 16390045 is 54009361.

It is a cyclic number.

It is not a de Polignac number, because 16390045 - 2¹ = 16390043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16389995 and 16390022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16390043) 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, 19504 + ... + 20326.

It is an arithmetic number, because the mean of its divisors is an integer number (1409040).

Almost surely, 2^16390045 is an apocalyptic number.

It is an amenable number.

16390045 is a deficient number, since it is larger than the sum of its proper divisors (6154595).

16390045 is an equidigital number, since it uses as much as digits as its factorization.

16390045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1404.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 16390045 is about 4048.4620536693. The cubic root of 16390045 is about 254.0154009303.

The spelling of 16390045 in words is "sixteen million, three hundred ninety thousand, forty-five".