16642628 has 12 divisors (see below), whose sum is σ = 29311212. Its totient is φ = 8268000.

The previous prime is 16642621. The next prime is 16642631. The reversal of 16642628 is 82624661.

It can be written as a sum of positive squares in 2 ways, for example, as 5299204 + 11343424 = 2302^2 + 3368^2 .

It is not an unprimeable number, because it can be changed into a prime (16642621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12623 + ... + 13878.

It is an arithmetic number, because the mean of its divisors is an integer number (2442601).

Almost surely, 2^16642628 is an apocalyptic number.

It is an amenable number.

16642628 is a deficient number, since it is larger than the sum of its proper divisors (12668584).

16642628 is a wasteful number, since it uses less digits than its factorization.

16642628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26662 (or 26660 counting only the distinct ones).

The product of its digits is 27648, while the sum is 35.

The square root of 16642628 is about 4079.5377189088. The cubic root of 16642628 is about 255.3136113281.

The spelling of 16642628 in words is "sixteen million, six hundred forty-two thousand, six hundred twenty-eight".