7448255640 has 128 divisors (see below), whose sum is σ = 28374336000. Its totient is φ = 1702456704.

The previous prime is 7448255609. The next prime is 7448255651. The reversal of 7448255640 is 465528447.

7448255640 is a `hidden beast` number, since 7 + 4 + 4 + 82 + 5 + 564 + 0 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 485050 + ... + 500169.

It is an arithmetic number, because the mean of its divisors is an integer number (221674500).

Almost surely, 2^7448255640 is an apocalyptic number.

7448255640 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

7448255640 is an abundant number, since it is smaller than the sum of its proper divisors (20926080360).

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

7448255640 is a wasteful number, since it uses less digits than its factorization.

7448255640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 985246 (or 985236 counting only the distinct ones).

The product of its (nonzero) digits is 1075200, while the sum is 45.

The square root of 7448255640 is about 86303.2771104319. The cubic root of 7448255640 is about 1952.9218210286.

The spelling of 7448255640 in words is "seven billion, four hundred forty-eight million, two hundred fifty-five thousand, six hundred forty".