16849720 has 64 divisors (see below), whose sum is σ = 40824000. Its totient is φ = 6236160.

The previous prime is 16849717. The next prime is 16849727. The reversal of 16849720 is 2794861.

It is a self number, because there is not a number n which added to its sum of digits gives 16849720.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16849727) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48106 + ... + 48454.

It is an arithmetic number, because the mean of its divisors is an integer number (637875).

Almost surely, 2^16849720 is an apocalyptic number.

16849720 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 16849720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20412000).

16849720 is an abundant number, since it is smaller than the sum of its proper divisors (23974280).

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

16849720 is a wasteful number, since it uses less digits than its factorization.

16849720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448 (or 444 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 16849720 is about 4104.8410444255. The cubic root of 16849720 is about 256.3682444570.

The spelling of 16849720 in words is "sixteen million, eight hundred forty-nine thousand, seven hundred twenty".