2738816 has 16 divisors (see below), whose sum is σ = 5456490. Its totient is φ = 1369344.

The previous prime is 2738809. The next prime is 2738821. The reversal of 2738816 is 6188372.

It can be written as a sum of positive squares in only one way, i.e., 1537600 + 1201216 = 1240^2 + 1096^2 .

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

It is a super-2 number, since 2×2738816² = 15002226163712, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10571 + ... + 10826.

2^2738816 is an apocalyptic number.

It is an amenable number.

2738816 is a deficient number, since it is larger than the sum of its proper divisors (2717674).

2738816 is an equidigital number, since it uses as much as digits as its factorization.

2738816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21411 (or 21399 counting only the distinct ones).

The product of its digits is 16128, while the sum is 35.

The square root of 2738816 is about 1654.9368568015. The cubic root of 2738816 is about 139.9117811566.

The spelling of 2738816 in words is "two million, seven hundred thirty-eight thousand, eight hundred sixteen".