16490656 has 72 divisors (see below), whose sum is σ = 40721940. Its totient is φ = 6515712.

The previous prime is 16490653. The next prime is 16490659. The reversal of 16490656 is 65609461.

It is an interprime number because it is at equal distance from previous prime (16490653) and next prime (16490659).

It can be written as a sum of positive squares in 2 ways, for example, as 16483600 + 7056 = 4060^2 + 84^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16490653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19980 + ... + 20788.

Almost surely, 2^16490656 is an apocalyptic number.

16490656 is a gapful number since it is divisible by the number (16) 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 16490656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20360970).

16490656 is an abundant number, since it is smaller than the sum of its proper divisors (24231284).

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

16490656 is a wasteful number, since it uses less digits than its factorization.

16490656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 846 (or 831 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 16490656 is about 4060.8688725444. The cubic root of 16490656 is about 254.5341025240.

The spelling of 16490656 in words is "sixteen million, four hundred ninety thousand, six hundred fifty-six".