126600780 has 48 divisors (see below), whose sum is σ = 354987360. Its totient is φ = 33712128.

The previous prime is 126600769. The next prime is 126600787. The reversal of 126600780 is 87006621.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (126600787) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66076 + ... + 67964.

It is an arithmetic number, because the mean of its divisors is an integer number (7395570).

Almost surely, 2^126600780 is an apocalyptic number.

126600780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126600780 is an abundant number, since it is smaller than the sum of its proper divisors (228386580).

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

126600780 is a wasteful number, since it uses less digits than its factorization.

126600780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3018 (or 3016 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 126600780 is about 11251.7012047068. The cubic root of 126600780 is about 502.1253265076.

The spelling of 126600780 in words is "one hundred twenty-six million, six hundred thousand, seven hundred eighty".