2835981 has 6 divisors (see below), whose sum is σ = 4096430. Its totient is φ = 1890648.

The previous prime is 2835971. The next prime is 2836003. The reversal of 2835981 is 1895382.

It can be written as a sum of positive squares in only one way, i.e., 1550025 + 1285956 = 1245^2 + 1134^2 .

It is not a de Polignac number, because 2835981 - 2¹⁷ = 2704909 is a prime.

It is a super-2 number, since 2×2835981² = 16085576464722, 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 (2835901) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 157546 + ... + 157563.

2^2835981 is an apocalyptic number.

It is an amenable number.

2835981 is a deficient number, since it is larger than the sum of its proper divisors (1260449).

2835981 is a wasteful number, since it uses less digits than its factorization.

2835981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315115 (or 315112 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 2835981 is about 1684.0371136053. The cubic root of 2835981 is about 141.5471422458.

The spelling of 2835981 in words is "two million, eight hundred thirty-five thousand, nine hundred eighty-one".