216198126 has 16 divisors (see below), whose sum is σ = 480440400. Its totient is φ = 72066024.

The previous prime is 216198119. The next prime is 216198127. The reversal of 216198126 is 621891612.

216198126 is a `hidden beast` number, since 21 + 619 + 8 + 12 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216198127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2001781 + ... + 2001888.

It is an arithmetic number, because the mean of its divisors is an integer number (30027525).

Almost surely, 2^216198126 is an apocalyptic number.

216198126 is an abundant number, since it is smaller than the sum of its proper divisors (264242274).

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

216198126 is a wasteful number, since it uses less digits than its factorization.

216198126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4003680 (or 4003674 counting only the distinct ones).

The product of its digits is 10368, while the sum is 36.

The square root of 216198126 is about 14703.6772951531. The cubic root of 216198126 is about 600.1833939387.

The spelling of 216198126 in words is "two hundred sixteen million, one hundred ninety-eight thousand, one hundred twenty-six".