2778612 has 12 divisors (see below), whose sum is σ = 6483456. Its totient is φ = 926200.

The previous prime is 2778583. The next prime is 2778619. The reversal of 2778612 is 2168772.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2778619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115764 + ... + 115787.

It is an arithmetic number, because the mean of its divisors is an integer number (540288).

2^2778612 is an apocalyptic number.

It is an amenable number.

2778612 is an abundant number, since it is smaller than the sum of its proper divisors (3704844).

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

2778612 is a wasteful number, since it uses less digits than its factorization.

2778612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231558 (or 231556 counting only the distinct ones).

The product of its digits is 9408, while the sum is 33.

The square root of 2778612 is about 1666.9169145461. The cubic root of 2778612 is about 140.5861816806.

The spelling of 2778612 in words is "two million, seven hundred seventy-eight thousand, six hundred twelve".