126356636 has 12 divisors (see below), whose sum is σ = 252713328. Its totient is φ = 54152832.

The previous prime is 126356603. The next prime is 126356647. The reversal of 126356636 is 636653621.

It is a happy number.

126356636 is an admirable number.

It is a super-2 number, since 2×126356636² = 31931998922472992, which contains 22 as substring.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 126356636.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2256341 + ... + 2256396.

It is an arithmetic number, because the mean of its divisors is an integer number (21059444).

Almost surely, 2^126356636 is an apocalyptic number.

It is an amenable number.

126356636 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

126356636 is a wasteful number, since it uses less digits than its factorization.

126356636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4512748 (or 4512746 counting only the distinct ones).

The product of its digits is 116640, while the sum is 38.

The square root of 126356636 is about 11240.8467652575. The cubic root of 126356636 is about 501.8023433108.

The spelling of 126356636 in words is "one hundred twenty-six million, three hundred fifty-six thousand, six hundred thirty-six".