2787378 has 32 divisors (see below), whose sum is σ = 6143040. Its totient is φ = 836160.

The previous prime is 2787377. The next prime is 2787383. The reversal of 2787378 is 8737872.

It is a super-2 number, since 2×2787378² = 15538952229768, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2787373) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10228 + ... + 10496.

It is an arithmetic number, because the mean of its divisors is an integer number (191970).

2^2787378 is an apocalyptic number.

2787378 is an abundant number, since it is smaller than the sum of its proper divisors (3355662).

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

2787378 is a wasteful number, since it uses less digits than its factorization.

2787378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442.

The product of its digits is 131712, while the sum is 42.

The square root of 2787378 is about 1669.5442491890. The cubic root of 2787378 is about 140.7338674989.

The spelling of 2787378 in words is "two million, seven hundred eighty-seven thousand, three hundred seventy-eight".