16261320 has 32 divisors (see below), whose sum is σ = 48784320. Its totient is φ = 4336320.

The previous prime is 16261313. The next prime is 16261339. The reversal of 16261320 is 2316261.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67636 + ... + 67875.

It is an arithmetic number, because the mean of its divisors is an integer number (1524510).

Almost surely, 2^16261320 is an apocalyptic number.

16261320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16261320 is an abundant number, since it is smaller than the sum of its proper divisors (32523000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16261320 is a wasteful number, since it uses less digits than its factorization.

16261320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135525 (or 135521 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 16261320 is about 4032.5327029052. The cubic root of 16261320 is about 253.3486525054.

Adding to 16261320 its reverse (2316261), we get a palindrome (18577581).

The spelling of 16261320 in words is "sixteen million, two hundred sixty-one thousand, three hundred twenty".