8072857938 has 16 divisors (see below), whose sum is σ = 16149499200. Its totient is φ = 2690322096.

The previous prime is 8072857931. The next prime is 8072857979. The reversal of 8072857938 is 8397582708.

It is a happy number.

It is a super-2 number, since 2×8072857938² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8072857931) 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, 129513 + ... + 181436.

It is an arithmetic number, because the mean of its divisors is an integer number (1009343700).

Almost surely, 2^8072857938 is an apocalyptic number.

8072857938 is an abundant number, since it is smaller than the sum of its proper divisors (8076641262).

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

8072857938 is a wasteful number, since it uses less digits than its factorization.

8072857938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315281.

The product of its (nonzero) digits is 6773760, while the sum is 57.

The square root of 8072857938 is about 89849.0842357339. The cubic root of 8072857938 is about 2006.0531560019.

The spelling of 8072857938 in words is "eight billion, seventy-two million, eight hundred fifty-seven thousand, nine hundred thirty-eight".