2247920 has 20 divisors (see below), whose sum is σ = 5226600. Its totient is φ = 899136.

The previous prime is 2247919. The next prime is 2247923. The reversal of 2247920 is 297422.

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 2247920.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2247923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13970 + ... + 14129.

It is an arithmetic number, because the mean of its divisors is an integer number (261330).

2^2247920 is an apocalyptic number.

2247920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2247920 is an abundant number, since it is smaller than the sum of its proper divisors (2978680).

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

2247920 is a wasteful number, since it uses less digits than its factorization.

2247920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28112 (or 28106 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 2247920 is about 1499.3065063555. The cubic root of 2247920 is about 130.9966784310.

The spelling of 2247920 in words is "two million, two hundred forty-seven thousand, nine hundred twenty".