1826720827728 has 40 divisors (see below), whose sum is σ = 4719167450976. Its totient is φ = 608889052800.

The previous prime is 1826720827727. The next prime is 1826720827739. The reversal of 1826720827728 is 8277280276281.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1826720827727) 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, 1145283 + ... + 2228253.

Almost surely, 2^{1826720827728} is an apocalyptic number.

It is an amenable number.

1826720827728 is an abundant number, since it is smaller than the sum of its proper divisors (2892446623248).

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

1826720827728 is a wasteful number, since it uses less digits than its factorization.

1826720827728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1118123 (or 1118117 counting only the distinct ones).

The product of its (nonzero) digits is 16859136, while the sum is 60.

The spelling of 1826720827728 in words is "one trillion, eight hundred twenty-six billion, seven hundred twenty million, eight hundred twenty-seven thousand, seven hundred twenty-eight".