2533986 has 108 divisors (see below), whose sum is σ = 7322562. Its totient is φ = 628992.

The previous prime is 2533967. The next prime is 2534009. The reversal of 2533986 is 6893352.

2533986 is nontrivially palindromic in base 16.

It can be written as a sum of positive squares in 3 ways, for example, as 1640961 + 893025 = 1281^2 + 945^2 .

It is a d-powerful number, because it can be written as 2⁵ + 5⁷ + 3⁹ + 3¹⁰ + 9 + 8⁷ + 6⁷ .

It is a self number, because there is not a number n which added to its sum of digits gives 2533986.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 149050 + ... + 149066.

2^2533986 is an apocalyptic number.

2533986 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 2533986, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3661281).

2533986 is an abundant number, since it is smaller than the sum of its proper divisors (4788576).

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

2533986 is a wasteful number, since it uses less digits than its factorization.

2533986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65 (or 42 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 2533986 is about 1591.8498672928. The cubic root of 2533986 is about 136.3331294180. Note that the first 3 decimals are identical.

It can be divided in two parts, 25339 and 86, that added together give a triangular number (25425 = T₂₂₅).

The spelling of 2533986 in words is "two million, five hundred thirty-three thousand, nine hundred eighty-six".