16280633 has 4 divisors (see below), whose sum is σ = 16293108. Its totient is φ = 16268160.

The previous prime is 16280623. The next prime is 16280657. The reversal of 16280633 is 33608261.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 33608261 = 181 ⋅185681.

It can be written as a sum of positive squares in 2 ways, for example, as 4700224 + 11580409 = 2168^2 + 3403^2 .

It is a cyclic number.

It is not a de Polignac number, because 16280633 - 2¹⁶ = 16215097 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 16280596 and 16280605.

It is not an unprimeable number, because it can be changed into a prime (16280623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4016 + ... + 6977.

It is an arithmetic number, because the mean of its divisors is an integer number (4073277).

Almost surely, 2^16280633 is an apocalyptic number.

It is an amenable number.

16280633 is a deficient number, since it is larger than the sum of its proper divisors (12475).

16280633 is a wasteful number, since it uses less digits than its factorization.

16280633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12474.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 16280633 is about 4034.9266412167. The cubic root of 16280633 is about 253.4489105975.

Adding to 16280633 its reverse (33608261), we get a palindrome (49888894).

The spelling of 16280633 in words is "sixteen million, two hundred eighty thousand, six hundred thirty-three".