16001244 has 108 divisors (see below), whose sum is σ = 48301344. Its totient is φ = 4451328.

The previous prime is 16001231. The next prime is 16001269. The reversal of 16001244 is 44210061.

16001244 = T₃₁₅ + T₃₁₆ + ... + T₅₀₂.

16001244 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 82812 + ... + 83004.

Almost surely, 2^16001244 is an apocalyptic number.

16001244 is a gapful number since it is divisible by the number (14) 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 16001244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24150672).

16001244 is an abundant number, since it is smaller than the sum of its proper divisors (32300100).

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

16001244 is a wasteful number, since it uses less digits than its factorization.

16001244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264 (or 252 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 16001244 is about 4000.1554969776. The cubic root of 16001244 is about 251.9907404005.

The spelling of 16001244 in words is "sixteen million, one thousand, two hundred forty-four".