20627628 has 36 divisors (see below), whose sum is σ = 55990872. Its totient is φ = 5893440.

The previous prime is 20627627. The next prime is 20627669. The reversal of 20627628 is 82672602.

It is not an unprimeable number, because it can be changed into a prime (20627623) 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 11 ways as a sum of consecutive naturals, for example, 16953 + ... + 18128.

It is an arithmetic number, because the mean of its divisors is an integer number (1555302).

Almost surely, 2^20627628 is an apocalyptic number.

20627628 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20627628 is an abundant number, since it is smaller than the sum of its proper divisors (35363244).

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

20627628 is a wasteful number, since it uses less digits than its factorization.

20627628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35102 (or 35093 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 20627628 is about 4541.7648552077. The cubic root of 20627628 is about 274.2519748616.

The spelling of 20627628 in words is "twenty million, six hundred twenty-seven thousand, six hundred twenty-eight".