2522780 has 48 divisors (see below), whose sum is σ = 5908224. Its totient is φ = 898560.

The previous prime is 2522761. The next prime is 2522789. The reversal of 2522780 is 872252.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2522789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7904 + ... + 8216.

It is an arithmetic number, because the mean of its divisors is an integer number (123088).

2^2522780 is an apocalyptic number.

2522780 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 2522780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2954112).

2522780 is an abundant number, since it is smaller than the sum of its proper divisors (3385444).

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

2522780 is a wasteful number, since it uses less digits than its factorization.

2522780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366 (or 364 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 2522780 is about 1588.3261629779. The cubic root of 2522780 is about 136.1318646066.

The spelling of 2522780 in words is "two million, five hundred twenty-two thousand, seven hundred eighty".