16891392 has 80 divisors (see below), whose sum is σ = 51460992. Its totient is φ = 4823040.

The previous prime is 16891379. The next prime is 16891393. The reversal of 16891392 is 29319861.

It is a self number, because there is not a number n which added to its sum of digits gives 16891392.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16891393) 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, 9967 + ... + 11537.

Almost surely, 2^16891392 is an apocalyptic number.

16891392 is a gapful number since it is divisible by the number (12) 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 16891392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25730496).

16891392 is an abundant number, since it is smaller than the sum of its proper divisors (34569600).

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

16891392 is an equidigital number, since it uses as much as digits as its factorization.

16891392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1599 (or 1583 counting only the distinct ones).

The product of its digits is 23328, while the sum is 39.

The square root of 16891392 is about 4109.9138677106. The cubic root of 16891392 is about 256.5794167563.

It can be divided in two parts, 1689 and 1392, that added together give a triangular number (3081 = T₇₈).

The spelling of 16891392 in words is "sixteen million, eight hundred ninety-one thousand, three hundred ninety-two".