2781374904 has 96 divisors (see below), whose sum is σ = 9391674240. Its totient is φ = 722433600.

The previous prime is 2781374861. The next prime is 2781374927. The reversal of 2781374904 is 4094731872.

2781374904 is a `hidden beast` number, since 27 + 8 + 137 + 490 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 2781374904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 245302 + ... + 256389.

It is an arithmetic number, because the mean of its divisors is an integer number (97829940).

Almost surely, 2^2781374904 is an apocalyptic number.

2781374904 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2781374904 is an abundant number, since it is smaller than the sum of its proper divisors (6610299336).

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

2781374904 is a wasteful number, since it uses less digits than its factorization.

2781374904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501721 (or 501714 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The square root of 2781374904 is about 52738.7419645179. The cubic root of 2781374904 is about 1406.3276338533.

The spelling of 2781374904 in words is "two billion, seven hundred eighty-one million, three hundred seventy-four thousand, nine hundred four".