2723456 has 16 divisors (see below), whose sum is σ = 5425890. Its totient is φ = 1361664.

The previous prime is 2723447. The next prime is 2723473. The reversal of 2723456 is 6543272.

It can be written as a sum of positive squares in only one way, i.e., 2689600 + 33856 = 1640^2 + 184^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10511 + ... + 10766.

2^2723456 is an apocalyptic number.

It is an amenable number.

2723456 is a deficient number, since it is larger than the sum of its proper divisors (2702434).

2723456 is an equidigital number, since it uses as much as digits as its factorization.

2723456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21291 (or 21279 counting only the distinct ones).

The product of its digits is 10080, while the sum is 29.

The square root of 2723456 is about 1650.2896715425. The cubic root of 2723456 is about 139.6497366585.

The spelling of 2723456 in words is "two million, seven hundred twenty-three thousand, four hundred fifty-six".