16425984 has 44 divisors (see below), whose sum is σ = 43789424. Its totient is φ = 5474304.

The previous prime is 16425971. The next prime is 16425991. The reversal of 16425984 is 48952461.

It is a nialpdrome in base 4, base 8 and base 16.

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, 399 + ... + 5745.

Almost surely, 2^16425984 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 16425984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21894712).

16425984 is an abundant number, since it is smaller than the sum of its proper divisors (27363440).

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

16425984 is an equidigital number, since it uses as much as digits as its factorization.

16425984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5370 (or 5352 counting only the distinct ones).

The product of its digits is 69120, while the sum is 39.

The square root of 16425984 is about 4052.8982222602. The cubic root of 16425984 is about 254.2009280817.

It can be divided in two parts, 1642 and 5984, that added together give a triangular number (7626 = T₁₂₃).

The spelling of 16425984 in words is "sixteen million, four hundred twenty-five thousand, nine hundred eighty-four".