126861816 has 32 divisors (see below), whose sum is σ = 317433600. Its totient is φ = 42250080.

The previous prime is 126861799. The next prime is 126861817. The reversal of 126861816 is 618168621.

It is a nude number because it is divisible by every one of its digits.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126861817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46161 + ... + 48831.

It is an arithmetic number, because the mean of its divisors is an integer number (9919800).

Almost surely, 2^126861816 is an apocalyptic number.

It is an amenable number.

126861816 is an abundant number, since it is smaller than the sum of its proper divisors (190571784).

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

126861816 is a wasteful number, since it uses less digits than its factorization.

126861816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4659 (or 4655 counting only the distinct ones).

The product of its digits is 27648, while the sum is 39.

The square root of 126861816 is about 11263.2950773741. The cubic root of 126861816 is about 502.4701974850.

The spelling of 126861816 in words is "one hundred twenty-six million, eight hundred sixty-one thousand, eight hundred sixteen".