2420220 has 96 divisors (see below), whose sum is σ = 7822080. Its totient is φ = 552960.

The previous prime is 2420213. The next prime is 2420237. The reversal of 2420220 is 220242.

It is a happy number.

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

It is a nialpdrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 2420196 and 2420205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12444 + ... + 12636.

It is an arithmetic number, because the mean of its divisors is an integer number (81480).

2^2420220 is an apocalyptic number.

2420220 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 2420220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3911040).

2420220 is an abundant number, since it is smaller than the sum of its proper divisors (5401860).

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

2420220 is a wasteful number, since it uses less digits than its factorization.

2420220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235 (or 233 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 12.

The square root of 2420220 is about 1555.7056276815. The cubic root of 2420220 is about 134.2615371766.

Adding to 2420220 its reverse (220242), we get a palindrome (2640462).

The spelling of 2420220 in words is "two million, four hundred twenty thousand, two hundred twenty".