2028766131 has 24 divisors (see below), whose sum is σ = 3367802880. Its totient is φ = 1152812016.

The previous prime is 2028766127. The next prime is 2028766133. The reversal of 2028766131 is 1316678202.

It is not a de Polignac number, because 2028766131 - 2² = 2028766127 is a prime.

It is a super-2 number, since 2×2028766131² = 8231784028585418322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2028766133) 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 23 ways as a sum of consecutive naturals, for example, 78675 + ... + 101228.

It is an arithmetic number, because the mean of its divisors is an integer number (140325120).

Almost surely, 2^2028766131 is an apocalyptic number.

2028766131 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2028766131 is a deficient number, since it is larger than the sum of its proper divisors (1339036749).

2028766131 is a wasteful number, since it uses less digits than its factorization.

2028766131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180095 (or 180092 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 2028766131 is about 45041.8264616345. The cubic root of 2028766131 is about 1265.9328277590.

The spelling of 2028766131 in words is "two billion, twenty-eight million, seven hundred sixty-six thousand, one hundred thirty-one".