16725840 has 40 divisors (see below), whose sum is σ = 51850848. Its totient is φ = 4460160.

The previous prime is 16725823. The next prime is 16725847. The reversal of 16725840 is 4852761.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16725847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34606 + ... + 35085.

Almost surely, 2^16725840 is an apocalyptic number.

16725840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16725840 is an abundant number, since it is smaller than the sum of its proper divisors (35125008).

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

16725840 is a wasteful number, since it uses less digits than its factorization.

16725840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69707 (or 69701 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 16725840 is about 4089.7237070492. The cubic root of 16725840 is about 255.7384209624.

The spelling of 16725840 in words is "sixteen million, seven hundred twenty-five thousand, eight hundred forty".