7147987356 has 12 divisors (see below), whose sum is σ = 16678637192. Its totient is φ = 2382662448.

The previous prime is 7147987351. The next prime is 7147987369. The reversal of 7147987356 is 6537897417.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 7147987296 and 7147987305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7147987351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 297832795 + ... + 297832818.

Almost surely, 2^7147987356 is an apocalyptic number.

It is an amenable number.

7147987356 is an abundant number, since it is smaller than the sum of its proper divisors (9530649836).

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

7147987356 is a wasteful number, since it uses less digits than its factorization.

7147987356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 595665620 (or 595665618 counting only the distinct ones).

The product of its digits is 8890560, while the sum is 57.

The square root of 7147987356 is about 84545.7707753617. The cubic root of 7147987356 is about 1926.3177444840.

The spelling of 7147987356 in words is "seven billion, one hundred forty-seven million, nine hundred eighty-seven thousand, three hundred fifty-six".