51428632 has 16 divisors (see below), whose sum is σ = 96573600. Its totient is φ = 25675680.

The previous prime is 51428627. The next prime is 51428633. The reversal of 51428632 is 23682415.

It is a junction number, because it is equal to n+sod(n) for n = 51428594 and 51428603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51428633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1282 + ... + 10222.

It is an arithmetic number, because the mean of its divisors is an integer number (6035850).

Almost surely, 2^51428632 is an apocalyptic number.

It is an amenable number.

51428632 is a deficient number, since it is larger than the sum of its proper divisors (45144968).

51428632 is a wasteful number, since it uses less digits than its factorization.

51428632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9666 (or 9662 counting only the distinct ones).

The product of its digits is 11520, while the sum is 31.

The square root of 51428632 is about 7171.3758791462. The cubic root of 51428632 is about 371.8790025415.

The spelling of 51428632 in words is "fifty-one million, four hundred twenty-eight thousand, six hundred thirty-two".