51842728 has 32 divisors (see below), whose sum is σ = 111355200. Its totient is φ = 22165632.

The previous prime is 51842719. The next prime is 51842731. The reversal of 51842728 is 82724815.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31051 + ... + 32677.

It is an arithmetic number, because the mean of its divisors is an integer number (3479850).

Almost surely, 2^51842728 is an apocalyptic number.

It is an amenable number.

51842728 is an abundant number, since it is smaller than the sum of its proper divisors (59512472).

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

51842728 is a wasteful number, since it uses less digits than its factorization.

51842728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2209 (or 2205 counting only the distinct ones).

The product of its digits is 35840, while the sum is 37.

The square root of 51842728 is about 7200.1894419522. The cubic root of 51842728 is about 372.8744411324.

The spelling of 51842728 in words is "fifty-one million, eight hundred forty-two thousand, seven hundred twenty-eight".