1616288 has 24 divisors (see below), whose sum is σ = 3245508. Its totient is φ = 792064.

The previous prime is 1616281. The next prime is 1616291. The reversal of 1616288 is 8826161.

It can be written as a sum of positive squares in 2 ways, for example, as 1607824 + 8464 = 1268^2 + 92^2 .

It is a super-2 number, since 2×1616288² = 5224773797888, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (1616281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1220 + ... + 2172.

2^1616288 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1616288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1622754).

1616288 is an abundant number, since it is smaller than the sum of its proper divisors (1629220).

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

1616288 is an equidigital number, since it uses as much as digits as its factorization.

1616288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1016 (or 1008 counting only the distinct ones).

The product of its digits is 4608, while the sum is 32.

The square root of 1616288 is about 1271.3331585387. Note that the first 3 decimals coincide. The cubic root of 1616288 is about 117.3562569995.

The spelling of 1616288 in words is "one million, six hundred sixteen thousand, two hundred eighty-eight".