126688780 has 12 divisors (see below), whose sum is σ = 266046480. Its totient is φ = 50675504.

The previous prime is 126688711. The next prime is 126688781. The reversal of 126688780 is 87886621.

It is a self number, because there is not a number n which added to its sum of digits gives 126688780.

It is not an unprimeable number, because it can be changed into a prime (126688781) 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 3 ways as a sum of consecutive naturals, for example, 3167200 + ... + 3167239.

It is an arithmetic number, because the mean of its divisors is an integer number (22170540).

Almost surely, 2^126688780 is an apocalyptic number.

126688780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126688780 is an abundant number, since it is smaller than the sum of its proper divisors (139357700).

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

126688780 is a wasteful number, since it uses less digits than its factorization.

126688780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6334448 (or 6334446 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 46.

The square root of 126688780 is about 11255.6110451632. The cubic root of 126688780 is about 502.2416417325.

The spelling of 126688780 in words is "one hundred twenty-six million, six hundred eighty-eight thousand, seven hundred eighty".