2570220 has 72 divisors (see below), whose sum is σ = 7927920. Its totient is φ = 673920.

The previous prime is 2570219. The next prime is 2570221. The reversal of 2570220 is 220752.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2570219) and next prime (2570221).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2570193 and 2570202.

It is not an unprimeable number, because it can be changed into a prime (2570221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19555 + ... + 19685.

It is an arithmetic number, because the mean of its divisors is an integer number (110110).

2^2570220 is an apocalyptic number.

2570220 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 2570220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3963960).

2570220 is an abundant number, since it is smaller than the sum of its proper divisors (5357700).

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

2570220 is a wasteful number, since it uses less digits than its factorization.

2570220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255 (or 250 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 18.

The square root of 2570220 is about 1603.1905688345. The cubic root of 2570220 is about 136.9798752118.

Adding to 2570220 its reverse (220752), we get a palindrome (2790972).

The spelling of 2570220 in words is "two million, five hundred seventy thousand, two hundred twenty".