20628118 has 12 divisors (see below), whose sum is σ = 35994132. Its totient is φ = 8840580.

The previous prime is 20628103. The next prime is 20628137. The reversal of 20628118 is 81182602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 105148 + ... + 105343.

It is an arithmetic number, because the mean of its divisors is an integer number (2999511).

Almost surely, 2^20628118 is an apocalyptic number.

20628118 is a deficient number, since it is larger than the sum of its proper divisors (15366014).

20628118 is a wasteful number, since it uses less digits than its factorization.

20628118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210507 (or 210500 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 20628118 is about 4541.8187986753. The cubic root of 20628118 is about 274.2541464217.

The spelling of 20628118 in words is "twenty million, six hundred twenty-eight thousand, one hundred eighteen".