33728706757 has 4 divisors (see below), whose sum is σ = 33730142656. Its totient is φ = 33727270860.

The previous prime is 33728706751. The next prime is 33728706761. The reversal of 33728706757 is 75760782733.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 33728706757 - 2¹⁵ = 33728673989 is a prime.

It is a super-2 number, since 2×33728706757² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 33728706698 and 33728706707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33728706751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 682119 + ... + 729892.

It is an arithmetic number, because the mean of its divisors is an integer number (8432535664).

Almost surely, 2^33728706757 is an apocalyptic number.

It is an amenable number.

33728706757 is a deficient number, since it is larger than the sum of its proper divisors (1435899).

33728706757 is a wasteful number, since it uses less digits than its factorization.

33728706757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1435898.

The product of its (nonzero) digits is 10372320, while the sum is 55.

The spelling of 33728706757 in words is "thirty-three billion, seven hundred twenty-eight million, seven hundred six thousand, seven hundred fifty-seven".