8240622440 has 32 divisors (see below), whose sum is σ = 18544367880. Its totient is φ = 3295721472.

The previous prime is 8240622433. The next prime is 8240622443. The reversal of 8240622440 is 442260428.

It can be written as a sum of positive squares in 4 ways, for example, as 3214663204 + 5025959236 = 56698^2 + 70894^2 .

It is a junction number, because it is equal to n+sod(n) for n = 8240622397 and 8240622406.

It is not an unprimeable number, because it can be changed into a prime (8240622443) 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, 322784 + ... + 347376.

Almost surely, 2^8240622440 is an apocalyptic number.

It is an amenable number.

8240622440 is an abundant number, since it is smaller than the sum of its proper divisors (10303745440).

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

8240622440 is a wasteful number, since it uses less digits than its factorization.

8240622440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32981 (or 32977 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 32.

The square root of 8240622440 is about 90777.8741764754. The cubic root of 8240622440 is about 2019.8541246813.

Adding to 8240622440 its reverse (442260428), we get a palindrome (8682882868).

The spelling of 8240622440 in words is "eight billion, two hundred forty million, six hundred twenty-two thousand, four hundred forty".