16655420 has 12 divisors (see below), whose sum is σ = 34976424. Its totient is φ = 6662160.

The previous prime is 16655417. The next prime is 16655423. The reversal of 16655420 is 2455661.

It is an interprime number because it is at equal distance from previous prime (16655417) and next prime (16655423).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16655423) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 416366 + ... + 416405.

It is an arithmetic number, because the mean of its divisors is an integer number (2914702).

Almost surely, 2^16655420 is an apocalyptic number.

16655420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16655420 is an abundant number, since it is smaller than the sum of its proper divisors (18321004).

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

16655420 is a wasteful number, since it uses less digits than its factorization.

16655420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 832780 (or 832778 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 16655420 is about 4081.1052424558. The cubic root of 16655420 is about 255.3790083575.

The spelling of 16655420 in words is "sixteen million, six hundred fifty-five thousand, four hundred twenty".