126820080728 has 32 divisors (see below), whose sum is σ = 268349706000. Its totient is φ = 55657714560.

The previous prime is 126820080721. The next prime is 126820080731. The reversal of 126820080728 is 827080028621.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126820080721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24844643 + ... + 24849746.

Almost surely, 2^126820080728 is an apocalyptic number.

It is an amenable number.

126820080728 is an abundant number, since it is smaller than the sum of its proper divisors (141529625272).

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

126820080728 is a wasteful number, since it uses less digits than its factorization.

126820080728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49694435 (or 49694431 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 44.

The spelling of 126820080728 in words is "one hundred twenty-six billion, eight hundred twenty million, eighty thousand, seven hundred twenty-eight".