1920280728038 has 32 divisors (see below), whose sum is σ = 2986857804672. Its totient is φ = 925240571200.

The previous prime is 1920280728031. The next prime is 1920280728053. The reversal of 1920280728038 is 8308270820291.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1920280728031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35166545 + ... + 35221107.

It is an arithmetic number, because the mean of its divisors is an integer number (93339306396).

Almost surely, 2^{1920280728038} is an apocalyptic number.

1920280728038 is a deficient number, since it is larger than the sum of its proper divisors (1066577076634).

1920280728038 is a wasteful number, since it uses less digits than its factorization.

1920280728038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59860.

The product of its (nonzero) digits is 774144, while the sum is 50.

The spelling of 1920280728038 in words is "one trillion, nine hundred twenty billion, two hundred eighty million, seven hundred twenty-eight thousand, thirty-eight".