126626780 has 72 divisors (see below), whose sum is σ = 311679648. Its totient is φ = 43085952.

The previous prime is 126626743. The next prime is 126626791. The reversal of 126626780 is 87626621.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 153449 + ... + 154271.

It is an arithmetic number, because the mean of its divisors is an integer number (4328884).

Almost surely, 2^126626780 is an apocalyptic number.

126626780 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 126626780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155839824).

126626780 is an abundant number, since it is smaller than the sum of its proper divisors (185052868).

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

126626780 is a wasteful number, since it uses less digits than its factorization.

126626780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1003 (or 994 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 126626780 is about 11252.8565262337. The cubic root of 126626780 is about 502.1596979780.

The spelling of 126626780 in words is "one hundred twenty-six million, six hundred twenty-six thousand, seven hundred eighty".