16267980 has 96 divisors (see below), whose sum is σ = 49533120. Its totient is φ = 3973120.

The previous prime is 16267961. The next prime is 16267981. The reversal of 16267980 is 8976261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16267981) 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 31 ways as a sum of consecutive naturals, for example, 41626 + ... + 42014.

It is an arithmetic number, because the mean of its divisors is an integer number (515970).

Almost surely, 2^16267980 is an apocalyptic number.

16267980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16267980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24766560).

16267980 is an abundant number, since it is smaller than the sum of its proper divisors (33265140).

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

16267980 is a wasteful number, since it uses less digits than its factorization.

16267980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459 (or 457 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 16267980 is about 4033.3584021260. The cubic root of 16267980 is about 253.3832350143.

The spelling of 16267980 in words is "sixteen million, two hundred sixty-seven thousand, nine hundred eighty".