2780672 has 20 divisors (see below), whose sum is σ = 5556936. Its totient is φ = 1390080.

The previous prime is 2780671. The next prime is 2780683. The reversal of 2780672 is 2760872.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2780671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2204 + ... + 3227.

2^2780672 is an apocalyptic number.

It is an amenable number.

2780672 is a deficient number, since it is larger than the sum of its proper divisors (2776264).

2780672 is an frugal number, since it uses more digits than its factorization.

2780672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5449 (or 5433 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 2780672 is about 1667.5347072850. The cubic root of 2780672 is about 140.6209155686.

The spelling of 2780672 in words is "two million, seven hundred eighty thousand, six hundred seventy-two".