10071891 has 16 divisors (see below), whose sum is σ = 14994720. Its totient is φ = 6681600.

The previous prime is 10071889. The next prime is 10071899. The reversal of 10071891 is 19817001.

It is not a de Polignac number, because 10071891 - 2¹ = 10071889 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (10071899) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5491 + ... + 7091.

It is an arithmetic number, because the mean of its divisors is an integer number (937170).

Almost surely, 2^10071891 is an apocalyptic number.

10071891 is a deficient number, since it is larger than the sum of its proper divisors (4922829).

10071891 is a wasteful number, since it uses less digits than its factorization.

10071891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1843 (or 1837 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 27.

The square root of 10071891 is about 3173.6242688762. The cubic root of 10071891 is about 215.9585182687.

Adding to 10071891 its reverse (19817001), we get a palindrome (29888892).

The spelling of 10071891 in words is "ten million, seventy-one thousand, eight hundred ninety-one".