16420755 has 32 divisors (see below), whose sum is σ = 28594944. Its totient is φ = 7998336.

The previous prime is 16420751. The next prime is 16420777. The reversal of 16420755 is 55702461.

It is not a de Polignac number, because 16420755 - 2² = 16420751 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16420751) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20472 + ... + 21258.

It is an arithmetic number, because the mean of its divisors is an integer number (893592).

Almost surely, 2^16420755 is an apocalyptic number.

16420755 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

16420755 is a deficient number, since it is larger than the sum of its proper divisors (12174189).

16420755 is a wasteful number, since it uses less digits than its factorization.

16420755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 915.

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 16420755 is about 4052.2530769931. The cubic root of 16420755 is about 254.1739513574.

The spelling of 16420755 in words is "sixteen million, four hundred twenty thousand, seven hundred fifty-five".