16213992 has 96 divisors (see below), whose sum is σ = 45280800. Its totient is φ = 4821120.

The previous prime is 16213991. The next prime is 16213993. The reversal of 16213992 is 29931261.

It is an interprime number because it is at equal distance from previous prime (16213991) and next prime (16213993).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16213991) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 438198 + ... + 438234.

It is an arithmetic number, because the mean of its divisors is an integer number (471675).

Almost surely, 2^16213992 is an apocalyptic number.

16213992 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 16213992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22640400).

16213992 is an abundant number, since it is smaller than the sum of its proper divisors (29066808).

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

16213992 is a wasteful number, since it uses less digits than its factorization.

16213992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127 (or 92 counting only the distinct ones).

The product of its digits is 5832, while the sum is 33.

The square root of 16213992 is about 4026.6601545201. The cubic root of 16213992 is about 253.1026262194.

It can be divided in two parts, 16213 and 992, that added together give a triangular number (17205 = T₁₈₅).

The spelling of 16213992 in words is "sixteen million, two hundred thirteen thousand, nine hundred ninety-two".