16220656 has 10 divisors (see below), whose sum is σ = 31427552. Its totient is φ = 8110320.

The previous prime is 16220641. The next prime is 16220671. The reversal of 16220656 is 65602261.

It is an interprime number because it is at equal distance from previous prime (16220641) and next prime (16220671).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506880 + ... + 506911.

Almost surely, 2^16220656 is an apocalyptic number.

16220656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16220656 is a deficient number, since it is larger than the sum of its proper divisors (15206896).

16220656 is a wasteful number, since it uses less digits than its factorization.

16220656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1013799 (or 1013793 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 16220656 is about 4027.4875542949. The cubic root of 16220656 is about 253.1372967861.

The spelling of 16220656 in words is "sixteen million, two hundred twenty thousand, six hundred fifty-six".