51127428 has 24 divisors (see below), whose sum is σ = 130142880. Its totient is φ = 15493120.

The previous prime is 51127421. The next prime is 51127429. The reversal of 51127428 is 82472115.

It is a super-2 number, since 2×51127428² = 5228027787790368, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51127395 and 51127404.

It is not an unprimeable number, because it can be changed into a prime (51127421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193533 + ... + 193796.

It is an arithmetic number, because the mean of its divisors is an integer number (5422620).

Almost surely, 2^51127428 is an apocalyptic number.

It is an amenable number.

51127428 is an abundant number, since it is smaller than the sum of its proper divisors (79015452).

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

51127428 is a wasteful number, since it uses less digits than its factorization.

51127428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387347 (or 387345 counting only the distinct ones).

The product of its digits is 4480, while the sum is 30.

The square root of 51127428 is about 7150.3446070801. The cubic root of 51127428 is about 371.1515813438.

The spelling of 51127428 in words is "fifty-one million, one hundred twenty-seven thousand, four hundred twenty-eight".