7147256740 has 72 divisors (see below), whose sum is σ = 16276088808. Its totient is φ = 2635176960.

The previous prime is 7147256731. The next prime is 7147256759. The reversal of 7147256740 is 476527417.

It can be written as a sum of positive squares in 12 ways, for example, as 2638671424 + 4508585316 = 51368^2 + 67146^2 .

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, 3585184 + ... + 3587176.

It is an arithmetic number, because the mean of its divisors is an integer number (226056789).

Almost surely, 2^7147256740 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7147256740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8138044404).

7147256740 is an abundant number, since it is smaller than the sum of its proper divisors (9128832068).

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

7147256740 is a wasteful number, since it uses less digits than its factorization.

7147256740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3089 (or 3074 counting only the distinct ones).

The product of its (nonzero) digits is 329280, while the sum is 43.

The square root of 7147256740 is about 84541.4498337945. The cubic root of 7147256740 is about 1926.2521107865.

The spelling of 7147256740 in words is "seven billion, one hundred forty-seven million, two hundred fifty-six thousand, seven hundred forty".