2123874828 has 18 divisors (see below), whose sum is σ = 5368683684. Its totient is φ = 707958264.

The previous prime is 2123874803. The next prime is 2123874829. The reversal of 2123874828 is 8284783212.

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (2123874829) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 29498226 + ... + 29498297.

Almost surely, 2^2123874828 is an apocalyptic number.

It is an amenable number.

2123874828 is an abundant number, since it is smaller than the sum of its proper divisors (3244808856).

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

2123874828 is a wasteful number, since it uses less digits than its factorization.

2123874828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58996533 (or 58996528 counting only the distinct ones).

The product of its digits is 344064, while the sum is 45.

The square root of 2123874828 is about 46085.5164666731. The cubic root of 2123874828 is about 1285.4138427933.

The spelling of 2123874828 in words is "two billion, one hundred twenty-three million, eight hundred seventy-four thousand, eight hundred twenty-eight".