2223520 has 48 divisors (see below), whose sum is σ = 5662440. Its totient is φ = 820224.

The previous prime is 2223503. The next prime is 2223521. The reversal of 2223520 is 253222.

2223520 = 152² + 153² + ... + 216².

It can be written as a sum of positive squares in 4 ways, for example, as 1354896 + 868624 = 1164^2 + 932^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a d-powerful number, because it can be written as 2⁵ + 2¹³ + 2¹⁷ + 3³ + 5⁹ + 2¹⁷ + 0 .

It is a junction number, because it is equal to n+sod(n) for n = 2223494 and 2223503.

It is not an unprimeable number, because it can be changed into a prime (2223521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1546 + ... + 2614.

2^2223520 is an apocalyptic number.

2223520 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 2223520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2831220).

2223520 is an abundant number, since it is smaller than the sum of its proper divisors (3438920).

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

2223520 is a wasteful number, since it uses less digits than its factorization.

2223520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1097 (or 1089 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 2223520 is about 1491.1472093660. The cubic root of 2223520 is about 130.5209862366.

Adding to 2223520 its reverse (253222), we get a palindrome (2476742).

It can be divided in two parts, 2223 and 520, that multiplied together give a triangular number (1155960 = T₁₅₂₀).

The spelling of 2223520 in words is "two million, two hundred twenty-three thousand, five hundred twenty".