2678904 has 48 divisors (see below), whose sum is σ = 7511400. Its totient is φ = 861504.

The previous prime is 2678903. The next prime is 2678909. The reversal of 2678904 is 4098762.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an Ulam number.

It is a d-powerful number, because it can be written as 2²¹ + 6⁷ + 7³ + 8⁵ + 9⁴ + 0 + 4⁹ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2678903) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1447 + ... + 2729.

2^2678904 is an apocalyptic number.

2678904 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2678904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3755700).

2678904 is an abundant number, since it is smaller than the sum of its proper divisors (4832496).

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

2678904 is a wasteful number, since it uses less digits than its factorization.

2678904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1324 (or 1317 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 2678904 is about 1636.7357758661. The cubic root of 2678904 is about 138.8840535443.

The spelling of 2678904 in words is "two million, six hundred seventy-eight thousand, nine hundred four".