16825428 has 48 divisors (see below), whose sum is σ = 44170560. Its totient is φ = 5537952.

The previous prime is 16825421. The next prime is 16825451. The reversal of 16825428 is 82452861.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 16825392 and 16825401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16825421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8026 + ... + 9902.

It is an arithmetic number, because the mean of its divisors is an integer number (920220).

Almost surely, 2^16825428 is an apocalyptic number.

16825428 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16825428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22085280).

16825428 is an abundant number, since it is smaller than the sum of its proper divisors (27345132).

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

16825428 is a wasteful number, since it uses less digits than its factorization.

16825428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1973 (or 1965 counting only the distinct ones).

The product of its digits is 30720, while the sum is 36.

The square root of 16825428 is about 4101.8810319169. The cubic root of 16825428 is about 256.2449843952.

The spelling of 16825428 in words is "sixteen million, eight hundred twenty-five thousand, four hundred twenty-eight".