8480278440 has 96 divisors (see below), whose sum is σ = 27972341280. Its totient is φ = 2227648896.

The previous prime is 8480278421. The next prime is 8480278459. The reversal of 8480278440 is 448720848.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (8480278421) and next prime (8480278459).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 151674 + ... + 199913.

It is an arithmetic number, because the mean of its divisors is an integer number (291378555).

Almost surely, 2^8480278440 is an apocalyptic number.

It is an amenable number.

8480278440 is an abundant number, since it is smaller than the sum of its proper divisors (19492062840).

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

8480278440 is a wasteful number, since it uses less digits than its factorization.

8480278440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351671 (or 351664 counting only the distinct ones).

The product of its (nonzero) digits is 458752, while the sum is 45.

The square root of 8480278440 is about 92088.4272859516. The cubic root of 8480278440 is about 2039.2479638607.

The spelling of 8480278440 in words is "eight billion, four hundred eighty million, two hundred seventy-eight thousand, four hundred forty".