2002356 has 18 divisors (see below), whose sum is σ = 5061602. Its totient is φ = 667440.

The previous prime is 2002349. The next prime is 2002361. The reversal of 2002356 is 6532002.

It can be written as a sum of positive squares in only one way, i.e., 1245456 + 756900 = 1116^2 + 870^2 .

It is a tau number, because it is divible by the number of its divisors (18).

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

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27775 + ... + 27846.

2^2002356 is an apocalyptic number.

It is an amenable number.

2002356 is an abundant number, since it is smaller than the sum of its proper divisors (3059246).

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

2002356 is a wasteful number, since it uses less digits than its factorization.

2002356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55631 (or 55626 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 2002356 is about 1415.0462889955. The cubic root of 2002356 is about 126.0415584757.

Adding to 2002356 its reverse (6532002), we get a palindrome (8534358).

It can be divided in two parts, 200 and 2356, that added together give a triangular number (2556 = T₇₁).

The spelling of 2002356 in words is "two million, two thousand, three hundred fifty-six".