51412928 has 28 divisors (see below), whose sum is σ = 116598192. Its totient is φ = 22033920.

The previous prime is 51412927. The next prime is 51412931. The reversal of 51412928 is 82921415.

It is a tau number, because it is divible by the number of its divisors (28).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 51412894 and 51412903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51412927) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56933 + ... + 57828.

Almost surely, 2^51412928 is an apocalyptic number.

It is an amenable number.

51412928 is an abundant number, since it is smaller than the sum of its proper divisors (65185264).

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

51412928 is a wasteful number, since it uses less digits than its factorization.

51412928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114780 (or 114770 counting only the distinct ones).

The product of its digits is 5760, while the sum is 32.

The square root of 51412928 is about 7170.2808871062. The cubic root of 51412928 is about 371.8411469595.

The spelling of 51412928 in words is "fifty-one million, four hundred twelve thousand, nine hundred twenty-eight".