16555400 has 96 divisors (see below), whose sum is σ = 41515200. Its totient is φ = 6124800.

The previous prime is 16555397. The next prime is 16555411. The reversal of 16555400 is 455561.

It is a self number, because there is not a number n which added to its sum of digits gives 16555400.

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 23 ways as a sum of consecutive naturals, for example, 271370 + ... + 271430.

It is an arithmetic number, because the mean of its divisors is an integer number (432450).

Almost surely, 2^16555400 is an apocalyptic number.

16555400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16555400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20757600).

16555400 is an abundant number, since it is smaller than the sum of its proper divisors (24959800).

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

16555400 is a wasteful number, since it uses less digits than its factorization.

16555400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159 (or 150 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 16555400 is about 4068.8327564549. The cubic root of 16555400 is about 254.8667764950.

The spelling of 16555400 in words is "sixteen million, five hundred fifty-five thousand, four hundred".