51267328 has 108 divisors (see below), whose sum is σ = 122799432. Its totient is φ = 21288960.

The previous prime is 51267319. The next prime is 51267341. The reversal of 51267328 is 82376215.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 51267293 and 51267302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 765151 + ... + 765217.

Almost surely, 2^51267328 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 51267328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61399716).

51267328 is an abundant number, since it is smaller than the sum of its proper divisors (71532104).

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

51267328 is an equidigital number, since it uses as much as digits as its factorization.

51267328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158 (or 137 counting only the distinct ones).

The product of its digits is 20160, while the sum is 34.

The square root of 51267328 is about 7160.1206693742. The cubic root of 51267328 is about 371.4898004442.

The spelling of 51267328 in words is "fifty-one million, two hundred sixty-seven thousand, three hundred twenty-eight".