16244140 has 48 divisors (see below), whose sum is σ = 38029824. Its totient is φ = 5777600.

The previous prime is 16244119. The next prime is 16244143. The reversal of 16244140 is 4144261.

16244140 = T₂₆₉ + T₂₇₀ + ... + T₄₈₈.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (16244143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9555 + ... + 11125.

It is an arithmetic number, because the mean of its divisors is an integer number (792288).

Almost surely, 2^16244140 is an apocalyptic number.

16244140 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 16244140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19014912).

16244140 is an abundant number, since it is smaller than the sum of its proper divisors (21785684).

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

16244140 is a wasteful number, since it uses less digits than its factorization.

16244140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1638 (or 1636 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 16244140 is about 4030.4019650650. The cubic root of 16244140 is about 253.2594005554.

It can be divided in two parts, 16244 and 140, that added together give a 14-th power (16384 = 2¹⁴).

The spelling of 16244140 in words is "sixteen million, two hundred forty-four thousand, one hundred forty".