2731869 has 24 divisors (see below), whose sum is σ = 4564352. Its totient is φ = 1542240.

The previous prime is 2731853. The next prime is 2731889. The reversal of 2731869 is 9681372.

It is not a de Polignac number, because 2731869 - 2⁴ = 2731853 is a prime.

It is a super-2 number, since 2×2731869² = 14926216466322, 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 (2731819) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6279 + ... + 6699.

2^2731869 is an apocalyptic number.

It is an amenable number.

2731869 is a deficient number, since it is larger than the sum of its proper divisors (1832483).

2731869 is a wasteful number, since it uses less digits than its factorization.

2731869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537 (or 534 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 2731869 is about 1652.8366525462. The cubic root of 2731869 is about 139.7933857014.

It can be divided in two parts, 2731 and 869, that added together give a square (3600 = 60²).

The spelling of 2731869 in words is "two million, seven hundred thirty-one thousand, eight hundred sixty-nine".