51628040 has 32 divisors (see below), whose sum is σ = 117089280. Its totient is φ = 20486592.

The previous prime is 51628019. The next prime is 51628067. The reversal of 51628040 is 4082615.

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, 2 + ... + 10161.

It is an arithmetic number, because the mean of its divisors is an integer number (3659040).

Almost surely, 2^51628040 is an apocalyptic number.

It is an amenable number.

51628040 is an abundant number, since it is smaller than the sum of its proper divisors (65461240).

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

51628040 is a wasteful number, since it uses less digits than its factorization.

51628040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10301 (or 10297 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 51628040 is about 7185.2654787419. The cubic root of 51628040 is about 372.3590205661.

The spelling of 51628040 in words is "fifty-one million, six hundred twenty-eight thousand, forty".