20627128 has 8 divisors (see below), whose sum is σ = 38675880. Its totient is φ = 10313560.

The previous prime is 20627111. The next prime is 20627153. The reversal of 20627128 is 82172602.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 20627096 and 20627105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1289188 + ... + 1289203.

It is an arithmetic number, because the mean of its divisors is an integer number (4834485).

Almost surely, 2^20627128 is an apocalyptic number.

It is an amenable number.

20627128 is a deficient number, since it is larger than the sum of its proper divisors (18048752).

20627128 is a wasteful number, since it uses less digits than its factorization.

20627128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2578397 (or 2578393 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 20627128 is about 4541.7098101926. The cubic root of 20627128 is about 274.2497589485.

The spelling of 20627128 in words is "twenty million, six hundred twenty-seven thousand, one hundred twenty-eight".