126786198 has 64 divisors (see below), whose sum is σ = 324730368. Its totient is φ = 32037120.

The previous prime is 126786197. The next prime is 126786203. The reversal of 126786198 is 891687621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126786197) 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, 13386 + ... + 20802.

It is an arithmetic number, because the mean of its divisors is an integer number (5073912).

Almost surely, 2^126786198 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 126786198, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162365184).

126786198 is an abundant number, since it is smaller than the sum of its proper divisors (197944170).

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

126786198 is a wasteful number, since it uses less digits than its factorization.

126786198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7477.

The product of its digits is 290304, while the sum is 48.

The square root of 126786198 is about 11259.9377440552. The cubic root of 126786198 is about 502.3703425288.

The spelling of 126786198 in words is "one hundred twenty-six million, seven hundred eighty-six thousand, one hundred ninety-eight".