8405502240 has 48 divisors (see below), whose sum is σ = 26477333568. Its totient is φ = 2241467136.

The previous prime is 8405502233. The next prime is 8405502241. The reversal of 8405502240 is 422055048.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 8405502198 and 8405502207.

It is not an unprimeable number, because it can be changed into a prime (8405502241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8755252 + ... + 8756211.

It is an arithmetic number, because the mean of its divisors is an integer number (551611116).

Almost surely, 2^8405502240 is an apocalyptic number.

8405502240 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8405502240 is an abundant number, since it is smaller than the sum of its proper divisors (18071831328).

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

8405502240 is a wasteful number, since it uses less digits than its factorization.

8405502240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17511481 (or 17511473 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 30.

The square root of 8405502240 is about 91681.5261653077. The cubic root of 8405502240 is about 2033.2364625235.

Adding to 8405502240 its reverse (422055048), we get a palindrome (8827557288).

The spelling of 8405502240 in words is "eight billion, four hundred five million, five hundred two thousand, two hundred forty".