2749644 has 18 divisors (see below), whose sum is σ = 6950580. Its totient is φ = 916536.

The previous prime is 2749639. The next prime is 2749667. The reversal of 2749644 is 4469472.

2749644 is a `hidden beast` number, since 2 + 7 + 4 + 9 + 644 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 76379 = 2749644 / (2 + 7 + 4 + 9 + 6 + 4 + 4).

It is a junction number, because it is equal to n+sod(n) for n = 2749599 and 2749608.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 38154 + ... + 38225.

2^2749644 is an apocalyptic number.

It is an amenable number.

2749644 is an abundant number, since it is smaller than the sum of its proper divisors (4200936).

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

2749644 is a wasteful number, since it uses less digits than its factorization.

2749644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76389 (or 76384 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 2749644 is about 1658.2050536650. The cubic root of 2749644 is about 140.0959206597.

The spelling of 2749644 in words is "two million, seven hundred forty-nine thousand, six hundred forty-four".