16840265 has 12 divisors (see below), whose sum is σ = 21805644. Its totient is φ = 12411456.

The previous prime is 16840259. The next prime is 16840309. The reversal of 16840265 is 56204861.

It can be written as a sum of positive squares in 6 ways, for example, as 87616 + 16752649 = 296^2 + 4093^2 .

It is not a de Polignac number, because 16840265 - 2⁸ = 16840009 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32831 + ... + 33339.

It is an arithmetic number, because the mean of its divisors is an integer number (1817137).

Almost surely, 2^16840265 is an apocalyptic number.

It is an amenable number.

16840265 is a deficient number, since it is larger than the sum of its proper divisors (4965379).

16840265 is an frugal number, since it uses more digits than its factorization.

16840265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1036 (or 527 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 16840265 is about 4103.6891938840. The cubic root of 16840265 is about 256.3202829225.

The spelling of 16840265 in words is "sixteen million, eight hundred forty thousand, two hundred sixty-five".