16490304 has 70 divisors (see below), whose sum is σ = 48897794. Its totient is φ = 5495040.

The previous prime is 16490297. The next prime is 16490311. The reversal of 16490304 is 40309461.

It is an interprime number because it is at equal distance from previous prime (16490297) and next prime (16490311).

It can be written as a sum of positive squares in only one way, i.e., 10497600 + 5992704 = 3240^2 + 2448^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 3594 + ... + 6774.

Almost surely, 2^16490304 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 16490304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24448897).

16490304 is an abundant number, since it is smaller than the sum of its proper divisors (32407490).

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

16490304 is an equidigital number, since it uses as much as digits as its factorization.

16490304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3205 (or 3186 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 16490304 is about 4060.8255318346. The cubic root of 16490304 is about 254.5322914653.

Adding to 16490304 its reverse (40309461), we get a palindrome (56799765).

The spelling of 16490304 in words is "sixteen million, four hundred ninety thousand, three hundred four".