7871146428 has 12 divisors (see below), whose sum is σ = 18366008360. Its totient is φ = 2623715472.

The previous prime is 7871146333. The next prime is 7871146463. The reversal of 7871146428 is 8246411787.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 327964423 + ... + 327964446.

Almost surely, 2^7871146428 is an apocalyptic number.

It is an amenable number.

7871146428 is an abundant number, since it is smaller than the sum of its proper divisors (10494861932).

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

7871146428 is a wasteful number, since it uses less digits than its factorization.

7871146428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655928876 (or 655928874 counting only the distinct ones).

The product of its digits is 602112, while the sum is 48.

The square root of 7871146428 is about 88719.4816711640. The cubic root of 7871146428 is about 1989.2040307154.

The spelling of 7871146428 in words is "seven billion, eight hundred seventy-one million, one hundred forty-six thousand, four hundred twenty-eight".