2522730 has 64 divisors (see below), whose sum is σ = 7112448. Its totient is φ = 560640.

The previous prime is 2522717. The next prime is 2522743. The reversal of 2522730 is 372252.

It is an interprime number because it is at equal distance from previous prime (2522717) and next prime (2522743).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2522697 and 2522706.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 8464 + ... + 8756.

It is an arithmetic number, because the mean of its divisors is an integer number (111132).

2^2522730 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2522730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3556224).

2522730 is an abundant number, since it is smaller than the sum of its proper divisors (4589718).

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

2522730 is a wasteful number, since it uses less digits than its factorization.

2522730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351.

The product of its (nonzero) digits is 840, while the sum is 21.

The square root of 2522730 is about 1588.3104230597. The cubic root of 2522730 is about 136.1309652498.

Adding to 2522730 its reverse (372252), we get a palindrome (2894982).

The spelling of 2522730 in words is "two million, five hundred twenty-two thousand, seven hundred thirty".