16992240 has 80 divisors (see below), whose sum is σ = 53273376. Its totient is φ = 4480000.

The previous prime is 16992229. The next prime is 16992253. The reversal of 16992240 is 4229961.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23890 + ... + 24590.

Almost surely, 2^16992240 is an apocalyptic number.

16992240 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 16992240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26636688).

16992240 is an abundant number, since it is smaller than the sum of its proper divisors (36281136).

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

16992240 is a wasteful number, since it uses less digits than its factorization.

16992240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 818 (or 812 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 16992240 is about 4122.1644799789. The cubic root of 16992240 is about 257.0890292973.

The spelling of 16992240 in words is "sixteen million, nine hundred ninety-two thousand, two hundred forty".