7871473800 has 72 divisors (see below), whose sum is σ = 26435038890. Its totient is φ = 2099059200.

The previous prime is 7871473777. The next prime is 7871473801. The reversal of 7871473800 is 83741787.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 6075578916 + 1795894884 = 77946^2 + 42378^2 .

It is a tau number, because it is divible by the number of its divisors (72).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7871473801) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2184721 + ... + 2188320.

Almost surely, 2^7871473800 is an apocalyptic number.

It is an amenable number.

7871473800 is an abundant number, since it is smaller than the sum of its proper divisors (18563565090).

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

7871473800 is a wasteful number, since it uses less digits than its factorization.

7871473800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4373063 (or 4373051 counting only the distinct ones).

The product of its (nonzero) digits is 263424, while the sum is 45.

The square root of 7871473800 is about 88721.3266357081. The cubic root of 7871473800 is about 1989.2316082600.

It can be divided in two parts, 7871 and 473800, that added together give a triangular number (481671 = T₉₈₁).

The spelling of 7871473800 in words is "seven billion, eight hundred seventy-one million, four hundred seventy-three thousand, eight hundred".