16773428 has 48 divisors (see below), whose sum is σ = 36220800. Its totient is φ = 6635520.

The previous prime is 16773401. The next prime is 16773431. The reversal of 16773428 is 82437761.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 16773391 and 16773400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21428 + ... + 22196.

It is an arithmetic number, because the mean of its divisors is an integer number (754600).

Almost surely, 2^16773428 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16773428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18110400).

16773428 is an abundant number, since it is smaller than the sum of its proper divisors (19447372).

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

16773428 is a wasteful number, since it uses less digits than its factorization.

16773428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 840 (or 838 counting only the distinct ones).

The product of its digits is 56448, while the sum is 38.

The square root of 16773428 is about 4095.5375715527. The cubic root of 16773428 is about 255.9807317855.

The spelling of 16773428 in words is "sixteen million, seven hundred seventy-three thousand, four hundred twenty-eight".