126711816 has 64 divisors (see below), whose sum is σ = 394951680. Its totient is φ = 32911680.

The previous prime is 126711811. The next prime is 126711839. The reversal of 126711816 is 618117621.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (33).

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

It is not an unprimeable number, because it can be changed into a prime (126711811) 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, 32436 + ... + 36131.

It is an arithmetic number, because the mean of its divisors is an integer number (6171120).

Almost surely, 2^126711816 is an apocalyptic number.

It is an amenable number.

126711816 is an abundant number, since it is smaller than the sum of its proper divisors (268239864).

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

126711816 is a wasteful number, since it uses less digits than its factorization.

126711816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68594 (or 68590 counting only the distinct ones).

The product of its digits is 4032, while the sum is 33.

The square root of 126711816 is about 11256.6343104855. The cubic root of 126711816 is about 502.2720809902.

The spelling of 126711816 in words is "one hundred twenty-six million, seven hundred eleven thousand, eight hundred sixteen".