8101988 has 6 divisors (see below), whose sum is σ = 14178486. Its totient is φ = 4050992.

The previous prime is 8101981. The next prime is 8101997. The reversal of 8101988 is 8891018.

It can be written as a sum of positive squares in only one way, i.e., 7628644 + 473344 = 2762^2 + 688^2 .

It is not an unprimeable number, because it can be changed into a prime (8101981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1012745 + ... + 1012752.

It is an arithmetic number, because the mean of its divisors is an integer number (2363081).

Almost surely, 2^8101988 is an apocalyptic number.

It is an amenable number.

8101988 is a deficient number, since it is larger than the sum of its proper divisors (6076498).

8101988 is a wasteful number, since it uses less digits than its factorization.

8101988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2025501 (or 2025499 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 35.

The square root of 8101988 is about 2846.3991287239. The cubic root of 8101988 is about 200.8463137141.

The spelling of 8101988 in words is "eight million, one hundred one thousand, nine hundred eighty-eight".