851026140 has 72 divisors (see below), whose sum is σ = 2586030720. Its totient is φ = 226537344.

The previous prime is 851026117. The next prime is 851026147. The reversal of 851026140 is 41620158.

851026140 is a `hidden beast` number, since 8 + 510 + 2 + 6 + 140 = 666.

851026140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (851026147) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 105366 + ... + 113154.

Almost surely, 2^851026140 is an apocalyptic number.

It is an amenable number.

851026140 is an abundant number, since it is smaller than the sum of its proper divisors (1735004580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

851026140 is a wasteful number, since it uses less digits than its factorization.

851026140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8411 (or 8406 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 851026140 is about 29172.3523220189. The cubic root of 851026140 is about 947.6492720638.

Adding to 851026140 its reverse (41620158), we get a palindrome (892646298).

The spelling of 851026140 in words is "eight hundred fifty-one million, twenty-six thousand, one hundred forty".