7211587860 has 288 divisors, whose sum is σ = 23160743424. Its totient is φ = 1814400000.

The previous prime is 7211587837. The next prime is 7211587891. The reversal of 7211587860 is 687851127.

It is a happy number.

7211587860 is a `hidden beast` number, since 7 + 2 + 1 + 1 + 587 + 8 + 60 = 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 95 ways as a sum of consecutive naturals, for example, 47758785 + ... + 47758935.

It is an arithmetic number, because the mean of its divisors is an integer number (80419248).

Almost surely, 2^7211587860 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 7211587860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11580371712).

7211587860 is an abundant number, since it is smaller than the sum of its proper divisors (15949155564).

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

7211587860 is a wasteful number, since it uses less digits than its factorization.

7211587860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375 (or 370 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 45.

The square root of 7211587860 is about 84921.0684106129. The cubic root of 7211587860 is about 1932.0141357967.

The spelling of 7211587860 in words is "seven billion, two hundred eleven million, five hundred eighty-seven thousand, eight hundred sixty".