2628780 has 96 divisors (see below), whose sum is σ = 9192960. Its totient is φ = 545280.

The previous prime is 2628779. The next prime is 2628781. The reversal of 2628780 is 878262.

It is an interprime number because it is at equal distance from previous prime (2628779) and next prime (2628781).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (2628781) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4336 + ... + 4904.

It is an arithmetic number, because the mean of its divisors is an integer number (95760).

2^2628780 is an apocalyptic number.

2628780 is a gapful number since it is divisible by the number (20) 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 2628780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4596480).

2628780 is an abundant number, since it is smaller than the sum of its proper divisors (6564180).

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

2628780 is a wasteful number, since it uses less digits than its factorization.

2628780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 599 (or 597 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 2628780 is about 1621.3512882778. The cubic root of 2628780 is about 138.0123912419.

The spelling of 2628780 in words is "two million, six hundred twenty-eight thousand, seven hundred eighty".