2423220 has 24 divisors (see below), whose sum is σ = 6785184. Its totient is φ = 646176.

The previous prime is 2423219. The next prime is 2423227. The reversal of 2423220 is 223242.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 2423220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2423227) 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, 20134 + ... + 20253.

It is an arithmetic number, because the mean of its divisors is an integer number (282716).

2^2423220 is an apocalyptic number.

2423220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2423220 is an abundant number, since it is smaller than the sum of its proper divisors (4361964).

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

2423220 is a wasteful number, since it uses less digits than its factorization.

2423220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40399 (or 40397 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 2423220 is about 1556.6695217675. The cubic root of 2423220 is about 134.3169892018.

Adding to 2423220 its reverse (223242), we get a palindrome (2646462).

The spelling of 2423220 in words is "two million, four hundred twenty-three thousand, two hundred twenty".