2723904 has 42 divisors (see below), whose sum is σ = 7809230. Its totient is φ = 907776.

The previous prime is 2723887. The next prime is 2723909. The reversal of 2723904 is 4093272.

2723904 is a `hidden beast` number, since 272 + 390 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1557504 + 1166400 = 1248^2 + 1080^2 .

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (2723909) 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, 1789 + ... + 2940.

2^2723904 is an apocalyptic number.

2723904 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2723904 is an abundant number, since it is smaller than the sum of its proper divisors (5085326).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2723904 is a wasteful number, since it uses less digits than its factorization.

2723904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4747 (or 4734 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 2723904 is about 1650.4253997076. The cubic root of 2723904 is about 139.6573935538.

The spelling of 2723904 in words is "two million, seven hundred twenty-three thousand, nine hundred four".