126640908 has 72 divisors (see below), whose sum is σ = 335204688. Its totient is φ = 41803776.

The previous prime is 126640907. The next prime is 126640933. The reversal of 126640908 is 809046621.

126640908 is a `hidden beast` number, since 1 + 2 + 6 + 640 + 9 + 0 + 8 = 666.

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

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (126640901) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 109260 + ... + 110412.

Almost surely, 2^126640908 is an apocalyptic number.

126640908 is a gapful number since it is divisible by the number (18) 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 126640908, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167602344).

126640908 is an abundant number, since it is smaller than the sum of its proper divisors (208563780).

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

126640908 is a wasteful number, since it uses less digits than its factorization.

126640908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1285 (or 1271 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 126640908 is about 11253.4842604413. The cubic root of 126640908 is about 502.1783729333.

The spelling of 126640908 in words is "one hundred twenty-six million, six hundred forty thousand, nine hundred eight".