16428656 has 10 divisors (see below), whose sum is σ = 31830552. Its totient is φ = 8214320.

The previous prime is 16428653. The next prime is 16428661. The reversal of 16428656 is 65682461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16428653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 513380 + ... + 513411.

Almost surely, 2^16428656 is an apocalyptic number.

16428656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16428656 is a deficient number, since it is larger than the sum of its proper divisors (15401896).

16428656 is a wasteful number, since it uses less digits than its factorization.

16428656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1026799 (or 1026793 counting only the distinct ones).

The product of its digits is 69120, while the sum is 38.

The square root of 16428656 is about 4053.2278495046. The cubic root of 16428656 is about 254.2147108796.

The spelling of 16428656 in words is "sixteen million, four hundred twenty-eight thousand, six hundred fifty-six".