126571680 has 192 divisors, whose sum is σ = 449608320. Its totient is φ = 33251328.

The previous prime is 126571663. The next prime is 126571703. The reversal of 126571680 is 86175621.

126571680 is a `hidden beast` number, since 1 + 2 + 6 + 571 + 6 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 358384 + ... + 358736.

It is an arithmetic number, because the mean of its divisors is an integer number (2341710).

Almost surely, 2^126571680 is an apocalyptic number.

126571680 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 126571680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (224804160).

126571680 is an abundant number, since it is smaller than the sum of its proper divisors (323036640).

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

126571680 is a wasteful number, since it uses less digits than its factorization.

126571680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460 (or 446 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 126571680 is about 11250.4079926019. The cubic root of 126571680 is about 502.0868513190.

The spelling of 126571680 in words is "one hundred twenty-six million, five hundred seventy-one thousand, six hundred eighty".