2187896428 has 6 divisors (see below), whose sum is σ = 3828818756. Its totient is φ = 1093948212.

The previous prime is 2187896383. The next prime is 2187896449. The reversal of 2187896428 is 8246987812.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 273487050 + ... + 273487057.

Almost surely, 2^2187896428 is an apocalyptic number.

It is an amenable number.

2187896428 is a deficient number, since it is larger than the sum of its proper divisors (1640922328).

2187896428 is a wasteful number, since it uses less digits than its factorization.

2187896428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546974111 (or 546974109 counting only the distinct ones).

The product of its digits is 3096576, while the sum is 55.

The square root of 2187896428 is about 46774.9551362692. The cubic root of 2187896428 is about 1298.2019378711.

The spelling of 2187896428 in words is "two billion, one hundred eighty-seven million, eight hundred ninety-six thousand, four hundred twenty-eight".