2247197440 has 72 divisors (see below), whose sum is σ = 5556475008. Its totient is φ = 869867520.

The previous prime is 2247197399. The next prime is 2247197473. The reversal of 2247197440 is 447917422.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 2247197393 and 2247197402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11364 + ... + 67996.

It is an arithmetic number, because the mean of its divisors is an integer number (77173264).

Almost surely, 2^2247197440 is an apocalyptic number.

2247197440 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 2247197440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2778237504).

2247197440 is an abundant number, since it is smaller than the sum of its proper divisors (3309277568).

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

2247197440 is an equidigital number, since it uses as much as digits as its factorization.

2247197440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56685 (or 56671 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 40.

The square root of 2247197440 is about 47404.6141214123. The cubic root of 2247197440 is about 1309.8264129100.

It can be divided in two parts, 22471 and 97440, that added together give a palindrome (119911).

The spelling of 2247197440 in words is "two billion, two hundred forty-seven million, one hundred ninety-seven thousand, four hundred forty".