16291140 has 96 divisors (see below), whose sum is σ = 47900160. Its totient is φ = 4133376.

The previous prime is 16291123. The next prime is 16291147. The reversal of 16291140 is 4119261.

16291140 = T₈₀₉ + T₈₁₀ + ... + T₈₅₅.

It is a self number, because there is not a number n which added to its sum of digits gives 16291140.

It is not an unprimeable number, because it can be changed into a prime (16291147) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 149406 + ... + 149514.

It is an arithmetic number, because the mean of its divisors is an integer number (498960).

Almost surely, 2^16291140 is an apocalyptic number.

16291140 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 16291140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23950080).

16291140 is an abundant number, since it is smaller than the sum of its proper divisors (31609020).

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

16291140 is a wasteful number, since it uses less digits than its factorization.

16291140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221 (or 219 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 16291140 is about 4036.2284375392. The cubic root of 16291140 is about 253.5034214805.

The spelling of 16291140 in words is "sixteen million, two hundred ninety-one thousand, one hundred forty".