16889730 has 128 divisors (see below), whose sum is σ = 49545216. Its totient is φ = 3628800.

The previous prime is 16889729. The next prime is 16889731. The reversal of 16889730 is 3798861.

It is an interprime number because it is at equal distance from previous prime (16889729) and next prime (16889731).

It is not an unprimeable number, because it can be changed into a prime (16889731) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 132927 + ... + 133053.

It is an arithmetic number, because the mean of its divisors is an integer number (387072).

Almost surely, 2^16889730 is an apocalyptic number.

16889730 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 16889730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24772608).

16889730 is an abundant number, since it is smaller than the sum of its proper divisors (32655486).

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

16889730 is a wasteful number, since it uses less digits than its factorization.

16889730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192.

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 16889730 is about 4109.7116687184. The cubic root of 16889730 is about 256.5710012474.

It can be divided in two parts, 168 and 89730, that added together give a palindrome (89898).

The spelling of 16889730 in words is "sixteen million, eight hundred eighty-nine thousand, seven hundred thirty".