16138628 has 12 divisors (see below), whose sum is σ = 30810192. Its totient is φ = 7335720.

The previous prime is 16138613. The next prime is 16138667. The reversal of 16138628 is 82683161.

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, 183350 + ... + 183437.

It is an arithmetic number, because the mean of its divisors is an integer number (2567516).

Almost surely, 2^16138628 is an apocalyptic number.

It is an amenable number.

16138628 is a deficient number, since it is larger than the sum of its proper divisors (14671564).

16138628 is a wasteful number, since it uses less digits than its factorization.

16138628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366802 (or 366800 counting only the distinct ones).

The product of its digits is 13824, while the sum is 35.

The square root of 16138628 is about 4017.2911271154. The cubic root of 16138628 is about 252.7098696283.

The spelling of 16138628 in words is "sixteen million, one hundred thirty-eight thousand, six hundred twenty-eight".