51847428 has 48 divisors (see below), whose sum is σ = 132894720. Its totient is φ = 15659424.

The previous prime is 51847427. The next prime is 51847483. The reversal of 51847428 is 82474815.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (51847421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 301 + ... + 10187.

It is an arithmetic number, because the mean of its divisors is an integer number (2768640).

Almost surely, 2^51847428 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51847428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66447360).

51847428 is an abundant number, since it is smaller than the sum of its proper divisors (81047292).

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

51847428 is a wasteful number, since it uses less digits than its factorization.

51847428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9936 (or 9934 counting only the distinct ones).

The product of its digits is 71680, while the sum is 39.

The square root of 51847428 is about 7200.5158148566. The cubic root of 51847428 is about 372.8857089095.

The spelling of 51847428 in words is "fifty-one million, eight hundred forty-seven thousand, four hundred twenty-eight".