16489770 has 64 divisors (see below), whose sum is σ = 43670016. Its totient is φ = 3951680.

The previous prime is 16489763. The next prime is 16489771. The reversal of 16489770 is 7798461.

It is not an unprimeable number, because it can be changed into a prime (16489771) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35077 + ... + 35543.

It is an arithmetic number, because the mean of its divisors is an integer number (682344).

Almost surely, 2^16489770 is an apocalyptic number.

16489770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 16489770, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21835008).

16489770 is an abundant number, since it is smaller than the sum of its proper divisors (27180246).

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

16489770 is a wasteful number, since it uses less digits than its factorization.

16489770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 595.

The product of its (nonzero) digits is 84672, while the sum is 42.

The square root of 16489770 is about 4060.7597811247. The cubic root of 16489770 is about 254.5295439576.

The spelling of 16489770 in words is "sixteen million, four hundred eighty-nine thousand, seven hundred seventy".