2036781 has 24 divisors (see below), whose sum is σ = 3180320. Its totient is φ = 1251936.

The previous prime is 2036747. The next prime is 2036791. The reversal of 2036781 is 1876302.

It is not a de Polignac number, because 2036781 - 2⁹ = 2036269 is a prime.

It is a super-2 number, since 2×2036781² = 8296953683922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2036701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7215 + ... + 7491.

2^2036781 is an apocalyptic number.

It is an amenable number.

2036781 is a deficient number, since it is larger than the sum of its proper divisors (1143539).

2036781 is a wasteful number, since it uses less digits than its factorization.

2036781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345 (or 342 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 2036781 is about 1427.1583654241. The cubic root of 2036781 is about 126.7597707300.

The spelling of 2036781 in words is "two million, thirty-six thousand, seven hundred eighty-one".