2187426672 has 60 divisors (see below), whose sum is σ = 6125519400. Its totient is φ = 728694144.

The previous prime is 2187426667. The next prime is 2187426691. The reversal of 2187426672 is 2766247812.

It is a happy number.

2187426672 is a `hidden beast` number, since 218 + 7 + 426 + 6 + 7 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 298638 + ... + 305874.

It is an arithmetic number, because the mean of its divisors is an integer number (102091990).

Almost surely, 2^2187426672 is an apocalyptic number.

It is an amenable number.

2187426672 is an abundant number, since it is smaller than the sum of its proper divisors (3938092728).

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

2187426672 is a wasteful number, since it uses less digits than its factorization.

2187426672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9350 (or 9341 counting only the distinct ones).

The product of its digits is 451584, while the sum is 45.

The square root of 2187426672 is about 46769.9334188109. The cubic root of 2187426672 is about 1298.1090203404.

The spelling of 2187426672 in words is "two billion, one hundred eighty-seven million, four hundred twenty-six thousand, six hundred seventy-two".