50921428 has 12 divisors (see below), whose sum is σ = 89703712. Its totient is φ = 25291800.

The previous prime is 50921359. The next prime is 50921447. The reversal of 50921428 is 82412905.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 50921428.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41550 + ... + 42757.

Almost surely, 2^50921428 is an apocalyptic number.

It is an amenable number.

50921428 is a deficient number, since it is larger than the sum of its proper divisors (38782284).

50921428 is a wasteful number, since it uses less digits than its factorization.

50921428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84462 (or 84460 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 50921428 is about 7135.9251677691. The cubic root of 50921428 is about 370.6524354185.

The spelling of 50921428 in words is "fifty million, nine hundred twenty-one thousand, four hundred twenty-eight".