860878172 has 24 divisors (see below), whose sum is σ = 1878280320. Its totient is φ = 335406960.

The previous prime is 860878171. The next prime is 860878211. The reversal of 860878172 is 271878068.

It is a happy number.

It is a super-3 number, since 3×860878172³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (860878171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1397222 + ... + 1397837.

It is an arithmetic number, because the mean of its divisors is an integer number (78261680).

Almost surely, 2^860878172 is an apocalyptic number.

It is an amenable number.

860878172 is an abundant number, since it is smaller than the sum of its proper divisors (1017402148).

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

860878172 is a wasteful number, since it uses less digits than its factorization.

860878172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2795081 (or 2795079 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 47.

The square root of 860878172 is about 29340.7254852364. The cubic root of 860878172 is about 951.2921187685.

The spelling of 860878172 in words is "eight hundred sixty million, eight hundred seventy-eight thousand, one hundred seventy-two".