51700028 has 12 divisors (see below), whose sum is σ = 90771912. Its totient is φ = 25765200.

The previous prime is 51700013. The next prime is 51700073. The reversal of 51700028 is 82000715.

It is a junction number, because it is equal to n+sod(n) for n = 51699976 and 51700012.

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, 19823 + ... + 22278.

It is an arithmetic number, because the mean of its divisors is an integer number (7564326).

Almost surely, 2^51700028 is an apocalyptic number.

It is an amenable number.

51700028 is a deficient number, since it is larger than the sum of its proper divisors (39071884).

51700028 is a wasteful number, since it uses less digits than its factorization.

51700028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42412 (or 42410 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 23.

The square root of 51700028 is about 7190.2731519741. The cubic root of 51700028 is about 372.5320075194.

The spelling of 51700028 in words is "fifty-one million, seven hundred thousand, twenty-eight".