16773642 has 40 divisors (see below), whose sum is σ = 38402496. Its totient is φ = 5469768.

The previous prime is 16773623. The next prime is 16773643. The reversal of 16773642 is 24637761.

16773642 is a `hidden beast` number, since 1 + 6 + 7 + 7 + 3 + 642 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 16773597 and 16773606.

It is not an unprimeable number, because it can be changed into a prime (16773643) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6513 + ... + 8715.

Almost surely, 2^16773642 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16773642, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19201248).

16773642 is an abundant number, since it is smaller than the sum of its proper divisors (21628854).

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

16773642 is a wasteful number, since it uses less digits than its factorization.

16773642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2264 (or 2255 counting only the distinct ones).

The product of its digits is 42336, while the sum is 36.

The square root of 16773642 is about 4095.5636974658. The cubic root of 16773642 is about 255.9818204050.

The spelling of 16773642 in words is "sixteen million, seven hundred seventy-three thousand, six hundred forty-two".