2187247860 has 336 divisors, whose sum is σ = 8152905600. Its totient is φ = 482049792.

The previous prime is 2187247841. The next prime is 2187247861. The reversal of 2187247860 is 687427812.

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 (2187247861) by changing a digit.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 2959371 + ... + 2960109.

It is an arithmetic number, because the mean of its divisors is an integer number (24264600).

Almost surely, 2^2187247860 is an apocalyptic number.

2187247860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2187247860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4076452800).

2187247860 is an abundant number, since it is smaller than the sum of its proper divisors (5965657740).

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

2187247860 is a wasteful number, since it uses less digits than its factorization.

2187247860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802 (or 785 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 45.

The square root of 2187247860 is about 46768.0217670151. The cubic root of 2187247860 is about 1298.0736479097.

It can be divided in two parts, 2187 and 247860, that added together give a cube (250047 = 63³).

The spelling of 2187247860 in words is "two billion, one hundred eighty-seven million, two hundred forty-seven thousand, eight hundred sixty".