51672928 has 72 divisors (see below), whose sum is σ = 112615272. Its totient is φ = 23245824.

The previous prime is 51672899. The next prime is 51672931. The reversal of 51672928 is 82927615.

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, 1099401 + ... + 1099447.

It is an arithmetic number, because the mean of its divisors is an integer number (1564101).

Almost surely, 2^51672928 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 51672928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56307636).

51672928 is an abundant number, since it is smaller than the sum of its proper divisors (60942344).

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

51672928 is a wasteful number, since it uses less digits than its factorization.

51672928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164 (or 109 counting only the distinct ones).

The product of its digits is 60480, while the sum is 40.

The square root of 51672928 is about 7188.3884146587. The cubic root of 51672928 is about 372.4669051570.

The spelling of 51672928 in words is "fifty-one million, six hundred seventy-two thousand, nine hundred twenty-eight".