16400755 has 8 divisors (see below), whose sum is σ = 22492512. Its totient is φ = 11246208.

The previous prime is 16400737. The next prime is 16400789. The reversal of 16400755 is 55700461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16400755 - 2⁵ = 16400723 is a prime.

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 in 7 ways as a sum of consecutive naturals, for example, 234262 + ... + 234331.

It is an arithmetic number, because the mean of its divisors is an integer number (2811564).

Almost surely, 2^16400755 is an apocalyptic number.

16400755 is a deficient number, since it is larger than the sum of its proper divisors (6091757).

16400755 is an equidigital number, since it uses as much as digits as its factorization.

16400755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468605.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 16400755 is about 4049.7845621712. The cubic root of 16400755 is about 254.0707172843.

The spelling of 16400755 in words is "sixteen million, four hundred thousand, seven hundred fifty-five".