2247808 has 32 divisors (see below), whose sum is σ = 4746060. Its totient is φ = 1056768.

The previous prime is 2247803. The next prime is 2247809. The reversal of 2247808 is 8087422.

It can be written as a sum of positive squares in 2 ways, for example, as 1827904 + 419904 = 1352^2 + 648^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a self number, because there is not a number n which added to its sum of digits gives 2247808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2247803) 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, 1660 + ... + 2692.

2^2247808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2247808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2373030).

2247808 is an abundant number, since it is smaller than the sum of its proper divisors (2498252).

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

2247808 is a wasteful number, since it uses less digits than its factorization.

2247808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1064 (or 1052 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 31.

The square root of 2247808 is about 1499.2691552887. The cubic root of 2247808 is about 130.9945028092.

It can be divided in two parts, 2 and 247808, that multiplied together give a square (495616 = 704²).

The spelling of 2247808 in words is "two million, two hundred forty-seven thousand, eight hundred eight".