1616244 has 48 divisors (see below), whose sum is σ = 4386816. Its totient is φ = 453600.

The previous prime is 1616231. The next prime is 1616269. The reversal of 1616244 is 4426161.

It is a super-2 number, since 2×1616244² = 5224489335072, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5829 + ... + 6099.

It is an arithmetic number, because the mean of its divisors is an integer number (91392).

2^1616244 is an apocalyptic number.

1616244 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 1616244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2193408).

1616244 is an abundant number, since it is smaller than the sum of its proper divisors (2770572).

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

1616244 is a wasteful number, since it uses less digits than its factorization.

1616244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356 (or 354 counting only the distinct ones).

The product of its digits is 1152, while the sum is 24.

The square root of 1616244 is about 1271.3158537515. The cubic root of 1616244 is about 117.3551920651.

The spelling of 1616244 in words is "one million, six hundred sixteen thousand, two hundred forty-four".