51328704 has 112 divisors (see below), whose sum is σ = 156805376. Its totient is φ = 14515200.

The previous prime is 51328699. The next prime is 51328721. The reversal of 51328704 is 40782315.

It is a tau number, because it is divible by the number of its divisors (112).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 243159 + ... + 243369.

It is an arithmetic number, because the mean of its divisors is an integer number (1400048).

Almost surely, 2^51328704 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 51328704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78402688).

51328704 is an abundant number, since it is smaller than the sum of its proper divisors (105476672).

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

51328704 is a wasteful number, since it uses less digits than its factorization.

51328704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414 (or 404 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 51328704 is about 7164.4053486664. The cubic root of 51328704 is about 371.6379875136.

The spelling of 51328704 in words is "fifty-one million, three hundred twenty-eight thousand, seven hundred four".