2865731 has 16 divisors (see below), whose sum is σ = 3345408. Its totient is φ = 2428800.

The previous prime is 2865727. The next prime is 2865739. The reversal of 2865731 is 1375682.

It is a happy number.

It is not a de Polignac number, because 2865731 - 2² = 2865727 is a prime.

It is a super-2 number, since 2×2865731² = 16424828328722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2865739) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11771 + ... + 12011.

It is an arithmetic number, because the mean of its divisors is an integer number (209088).

2^2865731 is an apocalyptic number.

2865731 is a deficient number, since it is larger than the sum of its proper divisors (479677).

2865731 is a wasteful number, since it uses less digits than its factorization.

2865731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322.

The product of its digits is 10080, while the sum is 32.

The square root of 2865731 is about 1692.8470102168. The cubic root of 2865731 is about 142.0403740251.

The spelling of 2865731 in words is "two million, eight hundred sixty-five thousand, seven hundred thirty-one".