16849920 has 88 divisors (see below), whose sum is σ = 53942544. Its totient is φ = 4489216.

The previous prime is 16849909. The next prime is 16849949. The reversal of 16849920 is 2994861.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14812 + ... + 15908.

Almost surely, 2^16849920 is an apocalyptic number.

16849920 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 16849920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26971272).

16849920 is an abundant number, since it is smaller than the sum of its proper divisors (37092624).

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

16849920 is a wasteful number, since it uses less digits than its factorization.

16849920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1125 (or 1107 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 16849920 is about 4104.8654058324. The cubic root of 16849920 is about 256.3692587854.

It can be divided in two parts, 168 and 49920, that multiplied together give a triangular number (8386560 = T₄₀₉₅).

The spelling of 16849920 in words is "sixteen million, eight hundred forty-nine thousand, nine hundred twenty".