126507636 has 48 divisors (see below), whose sum is σ = 342249600. Its totient is φ = 40334976.

The previous prime is 126507631. The next prime is 126507697. The reversal of 126507636 is 636705621.

126507636 is a `hidden beast` number, since 12 + 6 + 5 + 0 + 7 + 636 = 666.

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

It is a self number, because there is not a number n which added to its sum of digits gives 126507636.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126507631) 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, 22981 + ... + 27948.

It is an arithmetic number, because the mean of its divisors is an integer number (7130200).

Almost surely, 2^126507636 is an apocalyptic number.

It is an amenable number.

126507636 is an abundant number, since it is smaller than the sum of its proper divisors (215741964).

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

126507636 is a wasteful number, since it uses less digits than its factorization.

126507636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50965 (or 50957 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 126507636 is about 11247.5613356852. The cubic root of 126507636 is about 502.0021533957.

The spelling of 126507636 in words is "one hundred twenty-six million, five hundred seven thousand, six hundred thirty-six".