16261998 has 16 divisors (see below), whose sum is σ = 33280896. Its totient is φ = 5294520.

The previous prime is 16261997. The next prime is 16262003. The reversal of 16261998 is 89916261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16261997) 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 7 ways as a sum of consecutive naturals, for example, 31258 + ... + 31773.

It is an arithmetic number, because the mean of its divisors is an integer number (2080056).

Almost surely, 2^16261998 is an apocalyptic number.

16261998 is an abundant number, since it is smaller than the sum of its proper divisors (17018898).

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

16261998 is a wasteful number, since it uses less digits than its factorization.

16261998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63079.

The product of its digits is 46656, while the sum is 42.

The square root of 16261998 is about 4032.6167683032. The cubic root of 16261998 is about 253.3521734988.

The spelling of 16261998 in words is "sixteen million, two hundred sixty-one thousand, nine hundred ninety-eight".