2001928078 has 16 divisors (see below), whose sum is σ = 3018993120. Its totient is φ = 995606656.

The previous prime is 2001928069. The next prime is 2001928079. The reversal of 2001928078 is 8708291002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001928079) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 613026 + ... + 616282.

It is an arithmetic number, because the mean of its divisors is an integer number (188687070).

Almost surely, 2^2001928078 is an apocalyptic number.

2001928078 is a deficient number, since it is larger than the sum of its proper divisors (1017065042).

2001928078 is a wasteful number, since it uses less digits than its factorization.

2001928078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4811.

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 2001928078 is about 44742.9109245252. The cubic root of 2001928078 is about 1260.3257908704.

The spelling of 2001928078 in words is "two billion, one million, nine hundred twenty-eight thousand, seventy-eight".