16771320 has 128 divisors (see below), whose sum is σ = 57153600. Its totient is φ = 4372992.

The previous prime is 16771303. The next prime is 16771331. The reversal of 16771320 is 2317761.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57094 + ... + 57386.

Almost surely, 2^16771320 is an apocalyptic number.

16771320 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 16771320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28576800).

16771320 is an abundant number, since it is smaller than the sum of its proper divisors (40382280).

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

16771320 is a wasteful number, since it uses less digits than its factorization.

16771320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366 (or 356 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 27.

The square root of 16771320 is about 4095.2802101932. The cubic root of 16771320 is about 255.9700078796.

The spelling of 16771320 in words is "sixteen million, seven hundred seventy-one thousand, three hundred twenty".