2187250740 has 72 divisors (see below), whose sum is σ = 6983864160. Its totient is φ = 552567744.

The previous prime is 2187250717. The next prime is 2187250781. The reversal of 2187250740 is 470527812.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 2187250695 and 2187250704.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 316354 + ... + 323193.

Almost surely, 2^2187250740 is an apocalyptic number.

2187250740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2187250740 is an abundant number, since it is smaller than the sum of its proper divisors (4796613420).

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

2187250740 is a wasteful number, since it uses less digits than its factorization.

2187250740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639581 (or 639576 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 36.

The square root of 2187250740 is about 46768.0525572746. The cubic root of 2187250740 is about 1298.0742176440.

The spelling of 2187250740 in words is "two billion, one hundred eighty-seven million, two hundred fifty thousand, seven hundred forty".