7287871860 has 96 divisors (see below), whose sum is σ = 22771082880. Its totient is φ = 1935058176.

The previous prime is 7287871823. The next prime is 7287871951. The reversal of 7287871860 is 681787827.

It is a super-2 number, since 2×7287871860² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 7287871797 and 7287871806.

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, 96859 + ... + 154781.

It is an arithmetic number, because the mean of its divisors is an integer number (237198780).

Almost surely, 2^7287871860 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 7287871860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11385541440).

7287871860 is an abundant number, since it is smaller than the sum of its proper divisors (15483211020).

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

7287871860 is a wasteful number, since it uses less digits than its factorization.

7287871860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58174 (or 58166 counting only the distinct ones).

The product of its (nonzero) digits is 2107392, while the sum is 54.

The square root of 7287871860 is about 85369.0333786204. The cubic root of 7287871860 is about 1938.8025220629.

The spelling of 7287871860 in words is "seven billion, two hundred eighty-seven million, eight hundred seventy-one thousand, eight hundred sixty".