2678780 has 24 divisors (see below), whose sum is σ = 6058752. Its totient is φ = 988992.

The previous prime is 2678749. The next prime is 2678789. The reversal of 2678780 is 878762.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2678789) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4892 + ... + 5411.

It is an arithmetic number, because the mean of its divisors is an integer number (252448).

2^2678780 is an apocalyptic number.

2678780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2678780 is an abundant number, since it is smaller than the sum of its proper divisors (3379972).

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

2678780 is a wasteful number, since it uses less digits than its factorization.

2678780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10325 (or 10323 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 38.

The square root of 2678780 is about 1636.6978951535. The cubic root of 2678780 is about 138.8819106420.

The spelling of 2678780 in words is "two million, six hundred seventy-eight thousand, seven hundred eighty".