16745920 has 56 divisors (see below), whose sum is σ = 40837104. Its totient is φ = 6537216.

The previous prime is 16745893. The next prime is 16745951. The reversal of 16745920 is 2954761.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 13152 + ... + 14368.

It is an arithmetic number, because the mean of its divisors is an integer number (729234).

Almost surely, 2^16745920 is an apocalyptic number.

16745920 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 16745920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20418552).

16745920 is an abundant number, since it is smaller than the sum of its proper divisors (24091184).

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

16745920 is a wasteful number, since it uses less digits than its factorization.

16745920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1277 (or 1267 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 16745920 is about 4092.1779042461. The cubic root of 16745920 is about 255.8407212326.

The spelling of 16745920 in words is "sixteen million, seven hundred forty-five thousand, nine hundred twenty".