1052220 has 96 divisors (see below), whose sum is σ = 3386880. Its totient is φ = 241920.

The previous prime is 1052203. The next prime is 1052221. The reversal of 1052220 is 222501.

1052220 = 85² + 86² + ... + 155².

It is a super-2 number, since 2×1052220² = 2214333856800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1052196 and 1052205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1052221) 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, 14785 + ... + 14855.

It is an arithmetic number, because the mean of its divisors is an integer number (35280).

2^1052220 is an apocalyptic number.

1052220 is a gapful number since it is divisible by the number (10) 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 1052220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1693440).

1052220 is an abundant number, since it is smaller than the sum of its proper divisors (2334660).

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

1052220 is a wasteful number, since it uses less digits than its factorization.

1052220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115 (or 113 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 12.

The square root of 1052220 is about 1025.7777537069. Note that the first 4 decimals coincide. The cubic root of 1052220 is about 101.7112170006.

Adding to 1052220 its reverse (222501), we get a palindrome (1274721).

The spelling of 1052220 in words is "one million, fifty-two thousand, two hundred twenty".