2783378 has 8 divisors (see below), whose sum is σ = 4496268. Its totient is φ = 1284624.

The previous prime is 2783377. The next prime is 2783411. The reversal of 2783378 is 8733872.

It can be written as a sum of positive squares in 2 ways, for example, as 2778889 + 4489 = 1667^2 + 67^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (2783371) 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, 53501 + ... + 53552.

2^2783378 is an apocalyptic number.

2783378 is a deficient number, since it is larger than the sum of its proper divisors (1712890).

2783378 is a wasteful number, since it uses less digits than its factorization.

2783378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107068.

The product of its digits is 56448, while the sum is 38.

The square root of 2783378 is about 1668.3458873987. The cubic root of 2783378 is about 140.6665156766. Note that the first 3 decimals are identical.

The spelling of 2783378 in words is "two million, seven hundred eighty-three thousand, three hundred seventy-eight".