2729864 has 8 divisors (see below), whose sum is σ = 5118510. Its totient is φ = 1364928.

The previous prime is 2729861. The next prime is 2729869. The reversal of 2729864 is 4689272.

It can be written as a sum of positive squares in only one way, i.e., 2427364 + 302500 = 1558^2 + 550^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a d-powerful number, because it can be written as 2¹⁹ + 7 + 2²¹ + 9⁵ + 8⁵ + 6³ + 4⁷ .

It is not an unprimeable number, because it can be changed into a prime (2729861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170609 + ... + 170624.

2^2729864 is an apocalyptic number.

It is an amenable number.

2729864 is a deficient number, since it is larger than the sum of its proper divisors (2388646).

2729864 is a wasteful number, since it uses less digits than its factorization.

2729864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341239 (or 341235 counting only the distinct ones).

The product of its digits is 48384, while the sum is 38.

The square root of 2729864 is about 1652.2300082010. The cubic root of 2729864 is about 139.7591778220.

The spelling of 2729864 in words is "two million, seven hundred twenty-nine thousand, eight hundred sixty-four".